1. I.E.S. Francisco Giner de los Ros - Departamento de Fsica y Qumica F.CAPDEVILA CONSTRUCCIN DEL SISTEMA PERIDICO 2. I.E.S. Francisco Giner de los Ros - Departamento de Fsica y Qumica F.CAPDEVILA Criterios utilizados para la ordenacin de los elementos qumicos:

Orden creciente de nmero atmico:

Hidrgeno (Z=1), Helio (Z=2), Litio (Z=3), etc...

Similitud de la configuracin electrnica:

Se agrupan en familias aquellos elementos que presentan propiedades semejantes. Puesto que tales propiedades dependen fundamentalmente de la configuracin electrnica de la ltima capa, los elementos de configuracin anloga pertenecern a un mismo grupo. 3. Z =Elemento: Familia: HIDRGENO Nuevo grupo Configuracin electrnica externa: 1s 1 1 1 H 1s 1 4. Z =Elemento: Familia: HELIO Nuevo grupo Configuracin electrnica externa: 1s 2 2 2 He 1s 2 1 H 1s 1 5. Z =Elemento: Familia: LITIO H Configuracin electrnica externa: 2s 1 3 2 He 1s 2 1 H 1s 1 3 Li 2s 1 6. Z =Elemento: Familia: BERILIO He Configuracin electrnica externa: 2s 2 4 2 He 1s 2 1 H 1s 1 3 Li 2s 1 4 Be 2s 2 7. Z =Elemento: Familia: BORO Nuevo grupo Configuracin electrnica externa: 2s 2 p 1 5 5 B 2s 2 p 1 2 He 1s 2 1 H 1s 1 3 Li 2s 1 4 Be 2s 2 8. Z =Elemento: Familia: CARBONO Nuevo grupo Configuracin electrnica externa: 2s 2 p 2 6 5 B 2s 2 p 1 2 He 1s 2 1 H 1s 1 3 Li 2s 1 4 Be 2s 2 6 C 2s 2 p 2 9. Z =Elemento: Familia: NITRGENO Nuevo grupo Configuracin electrnica externa: 2s 2 p 3 7 5 B 2s 2 p 1 2 He 1s 2 1 H 1s 1 3 Li 2s 1 4 Be 2s 2 6 C 2s 2 p 2 7 N 2s 2 p 3 10. Z =Elemento: Familia: OXGENO Nuevo grupo Configuracin electrnica externa: 2s 2 p 4 8 5 B 2s 2 p 1 2 He 1s 2 1 H 1s 1 3 Li 2s 1 4 Be 2s 2 6 C 2s 2 p 2 7 N 2s 2 p 3 8 O 2s 2 p 4 11. Z =Elemento: Familia: FLOR Nuevo grupo Configuracin electrnica externa: 2s 2 p 5 9 5 B 2s 2 p 1 2 He 1s 2 1 H 1s 1 3 Li 2s 1 4 Be 2s 2 6 C 2s 2 p 2 7 N 2s 2 p 3 8 O 2s 2 p 4 9 F 2s 2 p 5 12. Z =Elemento: Familia: NEN Nuevo grupo Configuracin electrnica externa: 2s 2 p 6 10 5 B 2s 2 p 1 2 He 1s 2 1 H 1s 1 3 Li 2s 1 4 Be 2s 2 6 C 2s 2 p 2 7 N 2s 2 p 3 8 O 2s 2 p 4 9 F 2s 2 p 5 10 Ne 2s 2 p 6 13. Z =Elemento: Familia: SODIO H - Li Configuracin electrnica externa: 3s 1 11 5 B 2s 2 p 1 2 He 1s 2 1 H 1s 1 3 Li 2s 1 4 Be 2s 2 6 C 2s 2 p 2 7 N 2s 2 p 3 8 O 2s 2 p 4 9 F 2s 2 p 5 10 Ne 2s 2 p 6 11 Na 3s 1 14. Z =Elemento: Familia: MAGNESIO He - Be Configuracin electrnica externa: 3s 2 12 12 Mg 3s 2 5 B 2s 2 p 1 2 He 1s 2 1 H 1s 1 3 Li 2s 1 4 Be 2s 2 6 C 2s 2 p 2 7 N 2s 2 p 3 8 O 2s 2 p 4 9 F 2s 2 p 5 10 Ne 2s 2 p 6 11 Na 3s 1 15. Z =Elemento: Familia: ALUMINIO B Configuracin electrnica externa: 3s 2 p 1 13 12 Mg 3s 2 5 B 2s 2 p 1 2 He 1s 2 1 H 1s 1 3 Li 2s 1 4 Be 2s 2 6 C 2s 2 p 2 7 N 2s 2 p 3 8 O 2s 2 p 4 9 F 2s 2 p 5 10 Ne 2s 2 p 6 11 Na 3s 1 13 Al 3s 2 p 1 16. Z =Elemento: Familia: SILICIO C Configuracin electrnica externa: 3s 2 p 2 14 12 Mg 3s 2 5 B 2s 2 p 1 2 He 1s 2 1 H 1s 1 3 Li 2s 1 4 Be 2s 2 6 C 2s 2 p 2 7 N 2s 2 p 3 8 O 2s 2 p 4 9 F 2s 2 p 5 10 Ne 2s 2 p 6 11 Na 3s 1 13 Al 3s 2 p 1 14 Si 3s 2 p 2 17. Z =Elemento: Familia: FSFORO N Configuracin electrnica externa: 3s 2 p 3 15 12 Mg 3s 2 5 B 2s 2 p 1 2 He 1s 2 1 H 1s 1 3 Li 2s 1 4 Be 2s 2 6 C 2s 2 p 2 7 N 2s 2 p 3 8 O 2s 2 p 4 9 F 2s 2 p 5 10 Ne 2s 2 p 6 11 Na 3s 1 13 Al 3s 2 p 1 14 Si 3s 2 p 2 15 P 3s 2 p 3 18. Z =Elemento: Familia: AZUFRE O Configuracin electrnica externa: 3s 2 p 4 16 12 Mg 3s 2 5 B 2s 2 p 1 2 He 1s 2 1 H 1s 1 3 Li 2s 1 4 Be 2s 2 6 C 2s 2 p 2 7 N 2s 2 p 3 8 O 2s 2 p 4 9 F 2s 2 p 5 10 Ne 2s 2 p 6 11 Na 3s 1 13 Al 3s 2 p 1 14 Si 3s 2 p 2 15 P 3s 2 p 3 16 S 3s 2 p 4 19. Z =Elemento: Familia: CLORO F Configuracin electrnica externa: 3s 2 p 5 17 12 Mg 3s 2 5 B 2s 2 p 1 2 He 1s 2 1 H 1s 1 3 Li 2s 1 4 Be 2s 2 6 C 2s 2 p 2 7 N 2s 2 p 3 8 O 2s 2 p 4 9 F 2s 2 p 5 10 Ne 2s 2 p 6 11 Na 3s 1 13 Al 3s 2 p 1 14 Si 3s 2 p 2 15 P 3s 2 p 3 16 S 3s 2 p 4 17 Cl 3s 2 p 5 20. Z =Elemento: Familia: ARGN Ne Configuracin electrnica externa: 3s 2 p 6 18 12 Mg 3s 2 5 B 2s 2 p 1 2 He 1s 2 1 H 1s 1 3 Li 2s 1 4 Be 2s 2 6 C 2s 2 p 2 7 N 2s 2 p 3 8 O 2s 2 p 4 9 F 2s 2 p 5 10 Ne 2s 2 p 6 11 Na 3s 1 13 Al 3s 2 p 1 14 Si 3s 2 p 2 15 P 3s 2 p 3 16 S 3s 2 p 4 17 Cl 3s 2 p 5 18 Ar 3s 2 p 6 21. Z =Elemento: Familia: POTASIO H Li - Na Configuracin electrnica externa: 4s 1 19 12 Mg 3s 2 5 B 2s 2 p 1 2 He 1s 2 1 H 1s 1 3 Li 2s 1 4 Be 2s 2 6 C 2s 2 p 2 7 N 2s 2 p 3 8 O 2s 2 p 4 9 F 2s 2 p 5 10 Ne 2s 2 p 6 11 Na 3s 1 13 Al 3s 2 p 1 14 Si 3s 2 p 2 15 P 3s 2 p 3 16 S 3s 2 p 4 17 Cl 3s 2 p 5 18 Ar 3s 2 p 6 19 K 4s 1 22. Z =Elemento: Familia: CALCIO He Be - Mg Configuracin electrnica externa: 4s 2 20 12 Mg 3s 2 5 B 2s 2 p 1 2 He 1s 2 1 H 1s 1 3 Li 2s 1 4 Be 2s 2 6 C 2s 2 p 2 7 N 2s 2 p 3 8 O 2s 2 p 4 9 F 2s 2 p 5 10 Ne 2s 2 p 6 11 Na 3s 1 13 Al 3s 2 p 1 14 Si 3s 2 p 2 15 P 3s 2 p 3 16 S 3s 2 p 4 17 Cl 3s 2 p 5 18 Ar 3s 2 p 6 19 K 4s 1 20 Ca 4s 2 23. Z =Elemento: Familia: ESCANDIO Nuevo grupo Configuracin electrnica externa: 3d 14s 2 21 Para respetar el criterio de ordenacin adoptado, segn valores crecientes del nmero atmico Z, el escandio (Z=21) debe seguir al calcio (Z=20). Esta circunstancia nos obliga a abrir la tabla y a separar las dos primeras columnas del resto para as hacer sitio a los elementos con electrones diferenciadores en orbitales d. 12 Mg 3s 2 5 B 2s 2 p 1 2 He 1s 2 1 H 1s 1 3 Li 2s 1 4 Be 2s 2 6 C 2s 2 p 2 7 N 2s 2 p 3 8 O 2s 2 p 4 9 F 2s 2 p 5 10 Ne 2s 2 p 6 11 Na 3s 1 13 Al 3s 2 p 1 14 Si 3s 2 p 2 15 P 3s 2 p 3 16 S 3s 2 p 4 17 Cl 3s 2 p 5 18 Ar 3s 2 p 6 19 K 4s 1 20 Ca 4s 2 21 Sc 3d 1 4s 2 24. Z =Elemento: Familia: TITANIO Nuevo grupo Configuracin electrnica externa: 3d 24s 2 22 12 Mg 3s 2 5 B 2s 2 p 1 2 He 1s 2 1 H 1s 1 3 Li 2s 1 4 Be 2s 2 6 C 2s 2 p 2 7 N 2s 2 p 3 8 O 2s 2 p 4 9 F 2s 2 p 5 10 Ne 2s 2 p 6 11 Na 3s 1 13 Al 3s 2 p 1 14 Si 3s 2 p 2 15 P 3s 2 p 3 16 S 3s 2 p 4 17 Cl 3s 2 p 5 18 Ar 3s 2 p 6 19 K 4s 1 20 Ca 4s 2 21 Sc 3d 1 4s 2 22 Ti 3d 2 4s 2 25. Z =Elemento: Familia: VANADIO Nuevo grupo Configuracin electrnica externa: 3d 34s 2 23 12 Mg 3s 2 5 B 2s 2 p 1 2 He 1s 2 1 H 1s 1 3 Li 2s 1 4 Be 2s 2 6 C 2s 2 p 2 7 N 2s 2 p 3 8 O 2s 2 p 4 9 F 2s 2 p 5 10 Ne 2s 2 p 6 11 Na 3s 1 13 Al 3s 2 p 1 14 Si 3s 2 p 2 15 P 3s 2 p 3 16 S 3s 2 p 4 17 Cl 3s 2 p 5 18 Ar 3s 2 p 6 19 K 4s 1 20 Ca 4s 2 21 Sc 3d 1 4s 2 22 Ti 3d 2 4s 2 23 V 3d 3 4s 2 26. Z =Elemento: Familia: CROMO Nuevo grupo Configuracin electrnica externa: 3d 44s 2 24 12 Mg 3s 2 5 B 2s 2 p 1 2 He 1s 2 1 H 1s 1 3 Li 2s 1 4 Be 2s 2 6 C 2s 2 p 2 7 N 2s 2 p 3 8 O 2s 2 p 4 9 F 2s 2 p 5 10 Ne 2s 2 p 6 11 Na 3s 1 13 Al 3s 2 p 1 14 Si 3s 2 p 2 15 P 3s 2 p 3 16 S 3s 2 p 4 17 Cl 3s 2 p 5 18 Ar 3s 2 p 6 19 K 4s 1 20 Ca 4s 2 21 Sc 3d 1 4s 2 22 Ti 3d 2 4s 2 23 V 3d 3 4s 2 24 Cr 3d 4 4s 2 27. Z =Elemento: Familia: MANGANESO Nuevo grupo Configuracin electrnica externa: 3d 54s 2 25 12 Mg 3s 2 5 B 2s 2 p 1 2 He 1s 2 1 H 1s 1 3 Li 2s 1 4 Be 2s 2 6 C 2s 2 p 2 7 N 2s 2 p 3 8 O 2s 2 p 4 9 F 2s 2 p 5 10 Ne 2s 2 p 6 11 Na 3s 1 13 Al 3s 2 p 1 14 Si 3s 2 p 2 15 P 3s 2 p 3 16 S 3s 2 p 4 17 Cl 3s 2 p 5 18 Ar 3s 2 p 6 19 K 4s 1 20 Ca 4s 2 21 Sc 3d 1 4s 2 22 Ti 3d 2 4s 2 23 V 3d 3 4s 2 24 Cr 3d 4 4s 2 25 Mn 3d 5 4s 2 28. Z =Elemento: Familia: HIERRO Nuevo grupo Configuracin electrnica externa: 3d 64s 2 26 12 Mg 3s 2 5 B 2s 2 p 1 2 He 1s 2 1 H 1s 1 3 Li 2s 1 4 Be 2s 2 6 C 2s 2 p 2 7 N 2s 2 p 3 8 O 2s 2 p 4 9 F 2s 2 p 5 10 Ne 2s 2 p 6 11 Na 3s 1 13 Al 3s 2 p 1 14 Si 3s 2 p 2 15 P 3s 2 p 3 16 S 3s 2 p 4 17 Cl 3s 2 p 5 18 Ar 3s 2 p 6 19 K 4s 1 20 Ca 4s 2 21 Sc 3d 1 4s 2 22 Ti 3d 2 4s 2 23 V 3d 3 4s 2 24 Cr 3d 4 4s 2 25 Mn 3d 5 4s 2 26 Fe 3d 6 4s 2 29. Z =Elemento: Familia: COBALTO Nuevo grupo Configuracin electrnica externa: 3d 74s 2 27 12 Mg 3s 2 5 B 2s 2 p 1 2 He 1s 2 1 H 1s 1 3 Li 2s 1 4 Be 2s 2 6 C 2s 2 p 2 7 N 2s 2 p 3 8 O 2s 2 p 4 9 F 2s 2 p 5 10 Ne 2s 2 p 6 11 Na 3s 1 13 Al 3s 2 p 1 14 Si 3s 2 p 2 15 P 3s 2 p 3 16 S 3s 2 p 4 17 Cl 3s 2 p 5 18 Ar 3s 2 p 6 19 K 4s 1 20 Ca 4s 2 21 Sc 3d 1 4s 2 22 Ti 3d 2 4s 2 23 V 3d 3 4s 2 24 Cr 3d 4 4s 2 25 Mn 3d 5 4s 2 26 Fe 3d 6 4s 2 27 Co 3d 7 4s 2 30. Z =Elemento: Familia: NQUEL Nuevo grupo Configuracin electrnica externa: 3d 84s 2 28 12 Mg 3s 2 5 B 2s 2 p 1 2 He 1s 2 1 H 1s 1 3 Li 2s 1 4 Be 2s 2 6 C 2s 2 p 2 7 N 2s 2 p 3 8 O 2s 2 p 4 9 F 2s 2 p 5 10 Ne 2s 2 p 6 11 Na 3s 1 13 Al 3s 2 p 1 14 Si 3s 2 p 2 15 P 3s 2 p 3 16 S 3s 2 p 4 17 Cl 3s 2 p 5 18 Ar 3s 2 p 6 19 K 4s 1 20 Ca 4s 2 21 Sc 3d 1 4s 2 22 Ti 3d 2 4s 2 23 V 3d 3 4s 2 24 Cr 3d 4 4s 2 25 Mn 3d 5 4s 2 26 Fe 3d 6 4s 2 27 Co 3d 7 4s 2 28 Ni 3d 8 4s 2 31. Z =Elemento: Familia: COBRE Nuevo grupo Configuracin electrnica externa: 3d 94s 2 29 12 Mg 3s 2 5 B 2s 2 p 1 2 He 1s 2 1 H 1s 1 3 Li 2s 1 4 Be 2s 2 6 C 2s 2 p 2 7 N 2s 2 p 3 8 O 2s 2 p 4 9 F 2s 2 p 5 10 Ne 2s 2 p 6 11 Na 3s 1 13 Al 3s 2 p 1 14 Si 3s 2 p 2 15 P 3s 2 p 3 16 S 3s 2 p 4 17 Cl 3s 2 p 5 18 Ar 3s 2 p 6 19 K 4s 1 20 Ca 4s 2 21 Sc 3d 1 4s 2 22 Ti 3d 2 4s 2 23 V 3d 3 4s 2 24 Cr 3d 4 4s 2 25 Mn 3d 5 4s 2 26 Fe 3d 6 4s 2 27 Co 3d 7 4s 2 28 Ni 3d 8 4s 2 29 Cu 3d 9 4s 2 32. Z =Elemento: Familia: ZINC Nuevo grupo Configuracin electrnica externa: 3d 104s 2 30 12 Mg 3s 2 5 B 2s 2 p 1 2 He 1s 2 1 H 1s 1 3 Li 2s 1 4 Be 2s 2 6 C 2s 2 p 2 7 N 2s 2 p 3 8 O 2s 2 p 4 9 F 2s 2 p 5 10 Ne 2s 2 p 6 11 Na 3s 1 13 Al 3s 2 p 1 14 Si 3s 2 p 2 15 P 3s 2 p 3 16 S 3s 2 p 4 17 Cl 3s 2 p 5 18 Ar 3s 2 p 6 19 K 4s 1 20 Ca 4s 2 21 Sc 3d 1 4s 2 22 Ti 3d 2 4s 2 23 V 3d 3 4s 2 24 Cr 3d 4 4s 2 25 Mn 3d 5 4s 2 26 Fe 3d 6 4s 2 27 Co 3d 7 4s 2 28 Ni 3d 8 4s 2 29 Cu 3d 9 4s 2 30 Zn 3d 10 4s 2 33. Z =Elemento: Familia: GALIO B - Al Configuracin electrnica externa: 4s 2 p 1 31 12 Mg 3s 2 5 B 2s 2 p 1 2 He 1s 2 1 H 1s 1 3 Li 2s 1 4 Be 2s 2 6 C 2s 2 p 2 7 N 2s 2 p 3 8 O 2s 2 p 4 9 F 2s 2 p 5 10 Ne 2s 2 p 6 11 Na 3s 1 13 Al 3s 2 p 1 14 Si 3s 2 p 2 15 P 3s 2 p 3 16 S 3s 2 p 4 17 Cl 3s 2 p 5 18 Ar 3s 2 p 6 19 K 4s 1 20 Ca 4s 2 21 Sc 3d 1 4s 2 22 Ti 3d 2 4s 2 23 V 3d 3 4s 2 24 Cr 3d 4 4s 2 25 Mn 3d 5 4s 2 26 Fe 3d 6 4s 2 27 Co 3d 7 4s 2 28 Ni 3d 8 4s 2 29 Cu 3d 9 4s 2 30 Zn 3d 10 4s 2 31 Ga 4s 2 p 1 34. Z =Elemento: Familia: GERMANIO C - Si Configuracin electrnica externa: 4s 2 p 2 32 12 Mg 3s 2 5 B 2s 2 p 1 2 He 1s 2 1 H 1s 1 3 Li 2s 1 4 Be 2s 2 6 C 2s 2 p 2 7 N 2s 2 p 3 8 O 2s 2 p 4 9 F 2s 2 p 5 10 Ne 2s 2 p 6 11 Na 3s 1 13 Al 3s 2 p 1 14 Si 3s 2 p 2 15 P 3s 2 p 3 16 S 3s 2 p 4 17 Cl 3s 2 p 5 18 Ar 3s 2 p 6 19 K 4s 1 20 Ca 4s 2 21 Sc 3d 1 4s 2 22 Ti 3d 2 4s 2 23 V 3d 3 4s 2 24 Cr 3d 4 4s 2 25 Mn 3d 5 4s 2 26 Fe 3d 6 4s 2 27 Co 3d 7 4s 2 28 Ni 3d 8 4s 2 29 Cu 3d 9 4s 2 30 Zn 3d 10 4s 2 31 Ga 4s 2 p 1 32 Ge 4s 2 p 2 35. Z =Elemento: Familia: ARSNICO N - P Configuracin electrnica externa: 4s 2 p 3 33 12 Mg 3s 2 5 B 2s 2 p 1 2 He 1s 2 1 H 1s 1 3 Li 2s 1 4 Be 2s 2 6 C 2s 2 p 2 7 N 2s 2 p 3 8 O 2s 2 p 4 9 F 2s 2 p 5 10 Ne 2s 2 p 6 11 Na 3s 1 13 Al 3s 2 p 1 14 Si 3s 2 p 2 15 P 3s 2 p 3 16 S 3s 2 p 4 17 Cl 3s 2 p 5 18 Ar 3s 2 p 6 19 K 4s 1 20 Ca 4s 2 21 Sc 3d 1 4s 2 22 Ti 3d 2 4s 2 23 V 3d 3 4s 2 24 Cr 3d 4 4s 2 25 Mn 3d 5 4s 2 26 Fe 3d 6 4s 2 27 Co 3d 7 4s 2 28 Ni 3d 8 4s 2 29 Cu 3d 9 4s 2 30 Zn 3d 10 4s 2 31 Ga 4s 2 p 1 32 Ge 4s 2 p 2 33 As 4s 2 p 3 36. Z =Elemento: Familia: SELENIO O - S Configuracin electrnica externa: 4s 2 p 4 34 12 Mg 3s 2 5 B 2s 2 p 1 2 He 1s 2 1 H 1s 1 3 Li 2s 1 4 Be 2s 2 6 C 2s 2 p 2 7 N 2s 2 p 3 8 O 2s 2 p 4 9 F 2s 2 p 5 10 Ne 2s 2 p 6 11 Na 3s 1 13 Al 3s 2 p 1 14 Si 3s 2 p 2 15 P 3s 2 p 3 16 S 3s 2 p 4 17 Cl 3s 2 p 5 18 Ar 3s 2 p 6 19 K 4s 1 20 Ca 4s 2 21 Sc 3d 1 4s 2 22 Ti 3d 2 4s 2 23 V 3d 3 4s 2 24 Cr 3d 4 4s 2 25 Mn 3d 5 4s 2 26 Fe 3d 6 4s 2 27 Co 3d 7 4s 2 28 Ni 3d 8 4s 2 29 Cu 3d 9 4s 2 30 Zn 3d 10 4s 2 31 Ga 4s 2 p 1 32 Ge 4s 2 p 2 33 As 4s 2 p 3 34 Se 4s 2 p 4 37. Z =Elemento: Familia: BROMO F - Cl Configuracin electrnica externa: 4s 2 p 5 35 12 Mg 3s 2 5 B 2s 2 p 1 2 He 1s 2 1 H 1s 1 3 Li 2s 1 4 Be 2s 2 6 C 2s 2 p 2 7 N 2s 2 p 3 8 O 2s 2 p 4 9 F 2s 2 p 5 10 Ne 2s 2 p 6 11 Na 3s 1 13 Al 3s 2 p 1 14 Si 3s 2 p 2 15 P 3s 2 p 3 16 S 3s 2 p 4 17 Cl 3s 2 p 5 18 Ar 3s 2 p 6 19 K 4s 1 20 Ca 4s 2 21 Sc 3d 1 4s 2 22 Ti 3d 2 4s 2 23 V 3d 3 4s 2 24 Cr 3d 4 4s 2 25 Mn 3d 5 4s 2 26 Fe 3d 6 4s 2 27 Co 3d 7 4s 2 28 Ni 3d 8 4s 2 29 Cu 3d 9 4s 2 30 Zn 3d 10 4s 2 31 Ga 4s 2 p 1 32 Ge 4s 2 p 2 33 As 4s 2 p 3 34 Se 4s 2 p 4 35 Br 4s 2 p 5 38. Z =Elemento: Familia: KRIPTN Ne - Ar Configuracin electrnica externa: 4s 2 p 6 36 12 Mg 3s 2 5 B 2s 2 p 1 2 He 1s 2 1 H 1s 1 3 Li 2s 1 4 Be 2s 2 6 C 2s 2 p 2 7 N 2s 2 p 3 8 O 2s 2 p 4 9 F 2s 2 p 5 10 Ne 2s 2 p 6 11 Na 3s 1 13 Al 3s 2 p 1 14 Si 3s 2 p 2 15 P 3s 2 p 3 16 S 3s 2 p 4 17 Cl 3s 2 p 5 18 Ar 3s 2 p 6 19 K 4s 1 20 Ca 4s 2 21 Sc 3d 1 4s 2 22 Ti 3d 2 4s 2 23 V 3d 3 4s 2 24 Cr 3d 4 4s 2 25 Mn 3d 5 4s 2 26 Fe 3d 6 4s 2 27 Co 3d 7 4s 2 28 Ni 3d 8 4s 2 29 Cu 3d 9 4s 2 30 Zn 3d 10 4s 2 31 Ga 4s 2 p 1 32 Ge 4s 2 p 2 33 As 4s 2 p 3 34 Se 4s 2 p 4 35 Br 4s 2 p 5 36 Kr 4s 2 p 6 39. Z =Elemento: Familia: RUBIDIO H Li Na - K Configuracin electrnica externa: 5s 1 37 12 Mg 3s 2 5 B 2s 2 p 1 2 He 1s 2 1 H 1s 1 3 Li 2s 1 4 Be 2s 2 6 C 2s 2 p 2 7 N 2s 2 p 3 8 O 2s 2 p 4 9 F 2s 2 p 5 10 Ne 2s 2 p 6 11 Na 3s 1 13 Al 3s 2 p 1 14 Si 3s 2 p 2 15 P 3s 2 p 3 16 S 3s 2 p 4 17 Cl 3s 2 p 5 18 Ar 3s 2 p 6 19 K 4s 1 20 Ca 4s 2 21 Sc 3d 1 4s 2 22 Ti 3d 2 4s 2 23 V 3d 3 4s 2 24 Cr 3d 4 4s 2 25 Mn 3d 5 4s 2 26 Fe 3d 6 4s 2 27 Co 3d 7 4s 2 28 Ni 3d 8 4s 2 29 Cu 3d 9 4s 2 30 Zn 3d 10 4s 2 31 Ga 4s 2 p 1 32 Ge 4s 2 p 2 33 As 4s 2 p 3 34 Se 4s 2 p 4 35 Br 4s 2 p 5 36 Kr 4s 2 p 6 37 Rb 5s 1 40. Z =Elemento: Familia: ESTRONCIO He Be Mg Ca Configuracin electrnica externa: 5s 2 38 12 Mg 3s 2 5 B 2s 2 p 1 2 He 1s 2 1 H 1s 1 3 Li 2s 1 4 Be 2s 2 6 C 2s 2 p 2 7 N 2s 2 p 3 8 O 2s 2 p 4 9 F 2s 2 p 5 10 Ne 2s 2 p 6 11 Na 3s 1 13 Al 3s 2 p 1 14 Si 3s 2 p 2 15 P 3s 2 p 3 16 S 3s 2 p 4 17 Cl 3s 2 p 5 18 Ar 3s 2 p 6 19 K 4s 1 20 Ca 4s 2 21 Sc 3d 1 4s 2 22 Ti 3d 2 4s 2 23 V 3d 3 4s 2 24 Cr 3d 4 4s 2 25 Mn 3d 5 4s 2 26 Fe 3d 6 4s 2 27 Co 3d 7 4s 2 28 Ni 3d 8 4s 2 29 Cu 3d 9 4s 2 30 Zn 3d 10 4s 2 31 Ga 4s 2 p 1 32 Ge 4s 2 p 2 33 As 4s 2 p 3 34 Se 4s 2 p 4 35 Br 4s 2 p 5 36 Kr 4s 2 p 6 37 Rb 5s 1 38 Sr 5s 2 41. Configuracin electrnica externa: DeZ =Elemento: Desde el YTRIO hasta el CADMIO De4d 1 5s 2 a4d 10 5s 239 a Z =48 12 Mg 3s 2 5 B 2s 2 p 1 2 He 1s 2 1 H 1s 1 3 Li 2s 1 4 Be 2s 2 6 C 2s 2 p 2 7 N 2s 2 p 3 8 O 2s 2 p 4 9 F 2s 2 p 5 10 Ne 2s 2 p 6 11 Na 3s 1 13 Al 3s 2 p 1 14 Si 3s 2 p 2 15 P 3s 2 p 3 16 S 3s 2 p 4 17 Cl 3s 2 p 5 18 Ar 3s 2 p 6 19 K 4s 1 20 Ca 4s 2 21 Sc 3d 1 4s 2 22 Ti 3d 2 4s 2 23 V 3d 3 4s 2 24 Cr 3d 4 4s 2 25 Mn 3d 5 4s 2 26 Fe 3d 6 4s 2 27 Co 3d 7 4s 2 28 Ni 3d 8 4s 2 29 Cu 3d 9 4s 2 30 Zn 3d 10 4s 2 31 Ga 4s 2 p 1 32 Ge 4s 2 p 2 33 As 4s 2 p 3 34 Se 4s 2 p 4 35 Br 4s 2 p 5 36 Kr 4s 2 p 6 37 Rb 5s 1 38 Sr 5s 2 39 Y 4d 1 5s 2 40 Zr 4d 2 5s 2 41 Nb 4d 3 5s 2 42 Mo 4d 4 5s 2 43 Tc 4d 5 5s 2 44 Ru 4d 6 5s 2 45 Rh 4d 7 5s 2 46 Pd 4d 8 5s 2 47 Ag 4d 9 5s 2 48 Cd 4d 10 5s 2 42. Configuracin electrnica externa: DeZ =Elemento: Desde el INDIO hasta el XENN De5s 2 p 1 a5s 2 p 649 a Z =54 12 Mg 3s 2 5 B 2s 2 p 1 2 He 1s 2 1 H 1s 1 3 Li 2s 1 4 Be 2s 2 6 C 2s 2 p 2 7 N 2s 2 p 3 8 O 2s 2 p 4 9 F 2s 2 p 5 10 Ne 2s 2 p 6 11 Na 3s 1 13 Al 3s 2 p 1 14 Si 3s 2 p 2 15 P 3s 2 p 3 16 S 3s 2 p 4 17 Cl 3s 2 p 5 18 Ar 3s 2 p 6 19 K 4s 1 20 Ca 4s 2 21 Sc 3d 1 4s 2 22 Ti 3d 2 4s 2 23 V 3d 3 4s 2 24 Cr 3d 4 4s 2 25 Mn 3d 5 4s 2 26 Fe 3d 6 4s 2 27 Co 3d 7 4s 2 28 Ni 3d 8 4s 2 29 Cu 3d 9 4s 2 30 Zn 3d 10 4s 2 31 Ga 4s 2 p 1 32 Ge 4s 2 p 2 33 As 4s 2 p 3 34 Se 4s 2 p 4 35 Br 4s 2 p 5 36 Kr 4s 2 p 6 37 Rb 5s 1 38 Sr 5s 2 39 Y 4d 1 5s 2 40 Zr 4d 2 5s 2 41 Nb 4d 3 5s 2 42 Mo 4d 4 5s 2 43 Tc 4d 5 5s 2 44 Ru 4d 6 5s 2 45 Rh 4d 7 5s 2 46 Pd 4d 8 5s 2 47 Ag 4d 9 5s 2 48 Cd 4d 10 5s 2 49 In 5s 2 p 1 50 Sn 5s 2 p 2 51 Sb 5s 2 p 3 52 Te 5s 2 p 4 53 I 5s 2 p 5 54 Xe 5s 2 p 6 43. Elemento: CESIO Familia: 55 Z = Configuracin electrnica externa: 6s 1 H Li Na K Rb 55 Cs 6s 1 12 Mg 3s 2 5 B 2s 2 p 1 2 He 1s 2 1 H 1s 1 3 Li 2s 1 4 Be 2s 2 6 C 2s 2 p 2 7 N 2s 2 p 3 8 O 2s 2 p 4 9 F 2s 2 p 5 10 Ne 2s 2 p 6 11 Na 3s 1 13 Al 3s 2 p 1 14 Si 3s 2 p 2 15 P 3s 2 p 3 16 S 3s 2 p 4 17 Cl 3s 2 p 5 18 Ar 3s 2 p 6 19 K 4s 1 20 Ca 4s 2 21 Sc 3d 1 4s 2 22 Ti 3d 2 4s 2 23 V 3d 3 4s 2 24 Cr 3d 4 4s 2 25 Mn 3d 5 4s 2 26 Fe 3d 6 4s 2 27 Co 3d 7 4s 2 28 Ni 3d 8 4s 2 29 Cu 3d 9 4s 2 30 Zn 3d 10 4s 2 31 Ga 4s 2 p 1 32 Ge 4s 2 p 2 33 As 4s 2 p 3 34 Se 4s 2 p 4 35 Br 4s 2 p 5 36 Kr 4s 2 p 6 37 Rb 5s 1 38 Sr 5s 2 39 Y 4d 1 5s 2 40 Zr 4d 2 5s 2 41 Nb 4d 3 5s 2 42 Mo 4d 4 5s 2 43 Tc 4d 5 5s 2 44 Ru 4d 6 5s 2 45 Rh 4d 7 5s 2 46 Pd 4d 8 5s 2 47 Ag 4d 9 5s 2 48 Cd 4d 10 5s 2 49 In 5s 2 p 1 50 Sn 5s 2 p 2 51 Sb 5s 2 p 3 52 Te 5s 2 p 4 53 I 5s 2 p 5 54 Xe 5s 2 p 6 44. Elemento: BARIO Familia: 56 Z = Configuracin electrnica externa: 6s 2 He Be Mg Ca Sr 55 Cs 6s 1 12 Mg 3s 2 5 B 2s 2 p 1 2 He 1s 2 1 H 1s 1 3 Li 2s 1 4 Be 2s 2 6 C 2s 2 p 2 7 N 2s 2 p 3 8 O 2s 2 p 4 9 F 2s 2 p 5 10 Ne 2s 2 p 6 11 Na 3s 1 13 Al 3s 2 p 1 14 Si 3s 2 p 2 15 P 3s 2 p 3 16 S 3s 2 p 4 17 Cl 3s 2 p 5 18 Ar 3s 2 p 6 19 K 4s 1 20 Ca 4s 2 21 Sc 3d 1 4s 2 22 Ti 3d 2 4s 2 23 V 3d 3 4s 2 24 Cr 3d 4 4s 2 25 Mn 3d 5 4s 2 26 Fe 3d 6 4s 2 27 Co 3d 7 4s 2 28 Ni 3d 8 4s 2 29 Cu 3d 9 4s 2 30 Zn 3d 10 4s 2 31 Ga 4s 2 p 1 32 Ge 4s 2 p 2 33 As 4s 2 p 3 34 Se 4s 2 p 4 35 Br 4s 2 p 5 36 Kr 4s 2 p 6 37 Rb 5s 1 38 Sr 5s 2 39 Y 4d 1 5s 2 40 Zr 4d 2 5s 2 41 Nb 4d 3 5s 2 42 Mo 4d 4 5s 2 43 Tc 4d 5 5s 2 44 Ru 4d 6 5s 2 45 Rh 4d 7 5s 2 46 Pd 4d 8 5s 2 47 Ag 4d 9 5s 2 48 Cd 4d 10 5s 2 49 In 5s 2 p 1 50 Sn 5s 2 p 2 51 Sb 5s 2 p 3 52 Te 5s 2 p 4 53 I 5s 2 p 5 54 Xe 5s 2 p 6 56 Ba 6s 2 45. Elemento: DeZ =57 a Z =70 Desde el LANTANO hasta el YTERBIO Configuracin electrnica externa: De4f 1 6s 2 a4f 14 6s 2Los lantnidos, con electrones diferenciadores en orbitales f, son elementos poco frecuentes (tierras raras) y, en general, no demasiado importantes, por lo que suelen colocarse fuera del cuerpo principal de la Tabla . 56 Ba 6s 2 55 Cs 6s 1 12 Mg 3s 2 5 B 2s 2 p 1 2 He 1s 2 1 H 1s 1 3 Li 2s 1 4 Be 2s 2 6 C 2s 2 p 2 7 N 2s 2 p 3 8 O 2s 2 p 4 9 F 2s 2 p 5 10 Ne 2s 2 p 6 11 Na 3s 1 13 Al 3s 2 p 1 14 Si 3s 2 p 2 15 P 3s 2 p 3 16 S 3s 2 p 4 17 Cl 3s 2 p 5 18 Ar 3s 2 p 6 19 K 4s 1 20 Ca 4s 2 21 Sc 3d 1 4s 2 22 Ti 3d 2 4s 2 23 V 3d 3 4s 2 24 Cr 3d 4 4s 2 25 Mn 3d 5 4s 2 26 Fe 3d 6 4s 2 27 Co 3d 7 4s 2 28 Ni 3d 8 4s 2 29 Cu 3d 9 4s 2 30 Zn 3d 10 4s 2 31 Ga 4s 2 p 1 32 Ge 4s 2 p 2 33 As 4s 2 p 3 34 Se 4s 2 p 4 35 Br 4s 2 p 5 36 Kr 4s 2 p 6 37 Rb 5s 1 38 Sr 5s 2 39 Y 4d 1 5s 2 40 Zr 4d 2 5s 2 41 Nb 4d 3 5s 2 42 Mo 4d 4 5s 2 43 Tc 4d 5 5s 2 44 Ru 4d 6 5s 2 45 Rh 4d 7 5s 2 46 Pd 4d 8 5s 2 47 Ag 4d 9 5s 2 48 Cd 4d 10 5s 2 49 In 5s 2 p 1 50 Sn 5s 2 p 2 51 Sb 5s 2 p 3 52 Te 5s 2 p 4 53 I 5s 2 p 5 54 Xe 5s 2 p 6 57 La 4f 1 6s 2 58 Ce 4f 2 6s 2 59 Pr 4f 3 6s 2 60 Nd 4f 4 6s 2 61 Pm 4f 5 6s 2 62 Sm 4f 6 6s 2 63 Eu 4f 7 6s 2 64 Gd 4f 8 6s 2 65 Tb 4f 9 6s 2 66 Dy 4f 10 6s 2 67 Ho 4f 11 6s 2 68 Er 4f 12 6s 2 69 Tm 4f 13 6s 2 70 Yb 4f 14 6s 2 46. Elemento: DeZ =71 a Z =80 Desde el LUTECIO hasta el MERCURIO Configuracin electrnica externa: De5d 1 6s 2 a5d 10 6s 256 Ba 6s 2 55 Cs 6s 1 12 Mg 3s 2 5 B 2s 2 p 1 2 He 1s 2 1 H 1s 1 3 Li 2s 1 4 Be 2s 2 6 C 2s 2 p 2 7 N 2s 2 p 3 8 O 2s 2 p 4 9 F 2s 2 p 5 10 Ne 2s 2 p 6 11 Na 3s 1 13 Al 3s 2 p 1 14 Si 3s 2 p 2 15 P 3s 2 p 3 16 S 3s 2 p 4 17 Cl 3s 2 p 5 18 Ar 3s 2 p 6 19 K 4s 1 20 Ca 4s 2 21 Sc 3d 1 4s 2 22 Ti 3d 2 4s 2 23 V 3d 3 4s 2 24 Cr 3d 4 4s 2 25 Mn 3d 5 4s 2 26 Fe 3d 6 4s 2 27 Co 3d 7 4s 2 28 Ni 3d 8 4s 2 29 Cu 3d 9 4s 2 30 Zn 3d 10 4s 2 31 Ga 4s 2 p 1 32 Ge 4s 2 p 2 33 As 4s 2 p 3 34 Se 4s 2 p 4 35 Br 4s 2 p 5 36 Kr 4s 2 p 6 37 Rb 5s 1 38 Sr 5s 2 39 Y 4d 1 5s 2 40 Zr 4d 2 5s 2 41 Nb 4d 3 5s 2 42 Mo 4d 4 5s 2 43 Tc 4d 5 5s 2 44 Ru 4d 6 5s 2 45 Rh 4d 7 5s 2 46 Pd 4d 8 5s 2 47 Ag 4d 9 5s 2 48 Cd 4d 10 5s 2 49 In 5s 2 p 1 50 Sn 5s 2 p 2 51 Sb 5s 2 p 3 52 Te 5s 2 p 4 53 I 5s 2 p 5 54 Xe 5s 2 p 6 57 La 4f 1 6s 2 58 Ce 4f 2 6s 2 59 Pr 4f 3 6s 2 60 Nd 4f 4 6s 2 61 Pm 4f 5 6s 2 62 Sm 4f 6 6s 2 63 Eu 4f 7 6s 2 64 Gd 4f 8 6s 2 65 Tb 4f 9 6s 2 66 Dy 4f 10 6s 2 67 Ho 4f 11 6s 2 68 Er 4f 12 6s 2 69 Tm 4f 13 6s 2 70 Yb 4f 14 6s 2 71 Lu 5d 1 6s 2 72 Hf 5d 2 6s 2 73 Ta 5d 3 6s 2 74 W 5d 4 6s 2 75 Re 5d 5 6s 2 76 Os 5d 6 6s 2 77 Ir 5d 7 6s 2 78 Pt 5d 8 6s 2 79 Au 5d 9 6s 2 80 Hg 5d 10 6s 2 47. Elemento: DeZ =81 a Z =86 Desde el TALIO hasta el RADN Configuracin electrnica externa: De6s 2 p 1 a6s 2 p 6 56 Ba 6s 2 55 Cs 6s 1 12 Mg 3s 2 5 B 2s 2 p 1 2 He 1s 2 1 H 1s 1 3 Li 2s 1 4 Be 2s 2 6 C 2s 2 p 2 7 N 2s 2 p 3 8 O 2s 2 p 4 9 F 2s 2 p 5 10 Ne 2s 2 p 6 11 Na 3s 1 13 Al 3s 2 p 1 14 Si 3s 2 p 2 15 P 3s 2 p 3 16 S 3s 2 p 4 17 Cl 3s 2 p 5 18 Ar 3s 2 p 6 19 K 4s 1 20 Ca 4s 2 21 Sc 3d 1 4s 2 22 Ti 3d 2 4s 2 23 V 3d 3 4s 2 24 Cr 3d 4 4s 2 25 Mn 3d 5 4s 2 26 Fe 3d 6 4s 2 27 Co 3d 7 4s 2 28 Ni 3d 8 4s 2 29 Cu 3d 9 4s 2 30 Zn 3d 10 4s 2 31 Ga 4s 2 p 1 32 Ge 4s 2 p 2 33 As 4s 2 p 3 34 Se 4s 2 p 4 35 Br 4s 2 p 5 36 Kr 4s 2 p 6 37 Rb 5s 1 38 Sr 5s 2 39 Y 4d 1 5s 2 40 Zr 4d 2 5s 2 41 Nb 4d 3 5s 2 42 Mo 4d 4 5s 2 43 Tc 4d 5 5s 2 44 Ru 4d 6 5s 2 45 Rh 4d 7 5s 2 46 Pd 4d 8 5s 2 47 Ag 4d 9 5s 2 48 Cd 4d 10 5s 2 49 In 5s 2 p 1 50 Sn 5s 2 p 2 51 Sb 5s 2 p 3 52 Te 5s 2 p 4 53 I 5s 2 p 5 54 Xe 5s 2 p 6 57 La 4f 1 6s 2 58 Ce 4f 2 6s 2 59 Pr 4f 3 6s 2 60 Nd 4f 4 6s 2 61 Pm 4f 5 6s 2 62 Sm 4f 6 6s 2 63 Eu 4f 7 6s 2 64 Gd 4f 8 6s 2 65 Tb 4f 9 6s 2 66 Dy 4f 10 6s 2 67 Ho 4f 11 6s 2 68 Er 4f 12 6s 2 69 Tm 4f 13 6s 2 70 Yb 4f 14 6s 2 71 Lu 5d 1 6s 2 72 Hf 5d 2 6s 2 73 Ta 5d 3 6s 2 74 W 5d 4 6s 2 75 Re 5d 5 6s 2 76 Os 5d 6 6s 2 77 Ir 5d 7 6s 2 78 Pt 5d 8 6s 2 79 Au 5d 9 6s 2 80 Hg 5d 10 6s 2 81 Tl 6s 2 p 1 82 Pb 6s 2 p 2 83 Bi 6s 2 p 3 84 Po 6s 2 p 4 85 At 6s 2 p 5 86 Rn 6s 2 p 6 48. Elemento: Z = 87 FRANCIO Familia: H Li Na K Rb Cs Configuracin electrnica externa: 7s 1 56 Ba 6s 2 55 Cs 6s 1 12 Mg 3s 2 5 B 2s 2 p 1 2 He 1s 2 1 H 1s 1 3 Li 2s 1 4 Be 2s 2 6 C 2s 2 p 2 7 N 2s 2 p 3 8 O 2s 2 p 4 9 F 2s 2 p 5 10 Ne 2s 2 p 6 11 Na 3s 1 13 Al 3s 2 p 1 14 Si 3s 2 p 2 15 P 3s 2 p 3 16 S 3s 2 p 4 17 Cl 3s 2 p 5 18 Ar 3s 2 p 6 19 K 4s 1 20 Ca 4s 2 21 Sc 3d 1 4s 2 22 Ti 3d 2 4s 2 23 V 3d 3 4s 2 24 Cr 3d 4 4s 2 25 Mn 3d 5 4s 2 26 Fe 3d 6 4s 2 27 Co 3d 7 4s 2 28 Ni 3d 8 4s 2 29 Cu 3d 9 4s 2 30 Zn 3d 10 4s 2 31 Ga 4s 2 p 1 32 Ge 4s 2 p 2 33 As 4s 2 p 3 34 Se 4s 2 p 4 35 Br 4s 2 p 5 36 Kr 4s 2 p 6 37 Rb 5s 1 38 Sr 5s 2 39 Y 4d 1 5s 2 40 Zr 4d 2 5s 2 41 Nb 4d 3 5s 2 42 Mo 4d 4 5s 2 43 Tc 4d 5 5s 2 44 Ru 4d 6 5s 2 45 Rh 4d 7 5s 2 46 Pd 4d 8 5s 2 47 Ag 4d 9 5s 2 48 Cd 4d 10 5s 2 49 In 5s 2 p 1 50 Sn 5s 2 p 2 51 Sb 5s 2 p 3 52 Te 5s 2 p 4 53 I 5s 2 p 5 54 Xe 5s 2 p 6 57 La 4f 1 6s 2 58 Ce 4f 2 6s 2 59 Pr 4f 3 6s 2 60 Nd 4f 4 6s 2 61 Pm 4f 5 6s 2 62 Sm 4f 6 6s 2 63 Eu 4f 7 6s 2 64 Gd 4f 8 6s 2 65 Tb 4f 9 6s 2 66 Dy 4f 10 6s 2 67 Ho 4f 11 6s 2 68 Er 4f 12 6s 2 69 Tm 4f 13 6s 2 70 Yb 4f 14 6s 2 71 Lu 5d 1 6s 2 72 Hf 5d 2 6s 2 73 Ta 5d 3 6s 2 74 W 5d 4 6s 2 75 Re 5d 5 6s 2 76 Os 5d 6 6s 2 77 Ir 5d 7 6s 2 78 Pt 5d 8 6s 2 79 Au 5d 9 6s 2 80 Hg 5d 10 6s 2 81 Tl 6s 2 p 1 82 Pb 6s 2 p 2 83 Bi 6s 2 p 3 84 Po 6s 2 p 4 85 At 6s 2 p 5 86 Rn 6s 2 p 6 87 Fr 7s 1 49. Elemento: Z = 88 RADIO Familia: He Be Mg Ca Sr Ba Configuracin electrnica externa: 7s 2 55 Cs 6s 1 12 Mg 3s 2 5 B 2s 2 p 1 2 He 1s 2 1 H 1s 1 3 Li 2s 1 4 Be 2s 2 6 C 2s 2 p 2 7 N 2s 2 p 3 8 O 2s 2 p 4 9 F 2s 2 p 5 10 Ne 2s 2 p 6 11 Na 3s 1 13 Al 3s 2 p 1 14 Si 3s 2 p 2 15 P 3s 2 p 3 16 S 3s 2 p 4 17 Cl 3s 2 p 5 18 Ar 3s 2 p 6 19 K 4s 1 20 Ca 4s 2 21 Sc 3d 1 4s 2 22 Ti 3d 2 4s 2 23 V 3d 3 4s 2 24 Cr 3d 4 4s 2 25 Mn 3d 5 4s 2 26 Fe 3d 6 4s 2 27 Co 3d 7 4s 2 28 Ni 3d 8 4s 2 29 Cu 3d 9 4s 2 30 Zn 3d 10 4s 2 31 Ga 4s 2 p 1 32 Ge 4s 2 p 2 33 As 4s 2 p 3 34 Se 4s 2 p 4 35 Br 4s 2 p 5 36 Kr 4s 2 p 6 37 Rb 5s 1 38 Sr 5s 2 39 Y 4d 1 5s 2 40 Zr 4d 2 5s 2 41 Nb 4d 3 5s 2 42 Mo 4d 4 5s 2 43 Tc 4d 5 5s 2 44 Ru 4d 6 5s 2 45 Rh 4d 7 5s 2 46 Pd 4d 8 5s 2 47 Ag 4d 9 5s 2 48 Cd 4d 10 5s 2 49 In 5s 2 p 1 50 Sn 5s 2 p 2 51 Sb 5s 2 p 3 52 Te 5s 2 p 4 53 I 5s 2 p 5 54 Xe 5s 2 p 6 57 La 4f 1 6s 2 58 Ce 4f 2 6s 2 59 Pr 4f 3 6s 2 60 Nd 4f 4 6s 2 61 Pm 4f 5 6s 2 62 Sm 4f 6 6s 2 63 Eu 4f 7 6s 2 64 Gd 4f 8 6s 2 65 Tb 4f 9 6s 2 66 Dy 4f 10 6s 2 67 Ho 4f 11 6s 2 68 Er 4f 12 6s 2 69 Tm 4f 13 6s 2 70 Yb 4f 14 6s 2 71 Lu 5d 1 6s 2 72 Hf 5d 2 6s 2 73 Ta 5d 3 6s 2 74 W 5d 4 6s 2 75 Re 5d 5 6s 2 76 Os 5d 6 6s 2 77 Ir 5d 7 6s 2 78 Pt 5d 8 6s 2 79 Au 5d 9 6s 2 80 Hg 5d 10 6s 2 81 Tl 6s 2 p 1 82 Pb 6s 2 p 2 83 Bi 6s 2 p 3 84 Po 6s 2 p 4 85 At 6s 2 p 5 86 Rn 6s 2 p 6 87 Fr 7s 1 88 Ra 7s 2 56 Ba 6s 2 50. Elemento: DeZ =89 a Z =102 Desde el ACTINIO hasta el NOBELIO Configuracin electrnica externa: De5f 1 7s 2 a5f 14 7s 2 Los elementos actnidos se colocan debajo de los lantnidos . 100 Fm 5f 12 7s 2 55 Cs 6s 1 12 Mg 3s 2 5 B 2s 2 p 1 2 He 1s 2 1 H 1s 1 3 Li 2s 1 4 Be 2s 2 6 C 2s 2 p 2 7 N 2s 2 p 3 8 O 2s 2 p 4 9 F 2s 2 p 5 10 Ne 2s 2 p 6 11 Na 3s 1 13 Al 3s 2 p 1 14 Si 3s 2 p 2 15 P 3s 2 p 3 16 S 3s 2 p 4 17 Cl 3s 2 p 5 18 Ar 3s 2 p 6 19 K 4s 1 20 Ca 4s 2 21 Sc 3d 1 4s 2 22 Ti 3d 2 4s 2 23 V 3d 3 4s 2 24 Cr 3d 4 4s 2 25 Mn 3d 5 4s 2 26 Fe 3d 6 4s 2 27 Co 3d 7 4s 2 28 Ni 3d 8 4s 2 29 Cu 3d 9 4s 2 30 Zn 3d 10 4s 2 31 Ga 4s 2 p 1 32 Ge 4s 2 p 2 33 As 4s 2 p 3 34 Se 4s 2 p 4 35 Br 4s 2 p 5 36 Kr 4s 2 p 6 37 Rb 5s 1 38 Sr 5s 2 39 Y 4d 1 5s 2 40 Zr 4d 2 5s 2 41 Nb 4d 3 5s 2 42 Mo 4d 4 5s 2 43 Tc 4d 5 5s 2 44 Ru 4d 6 5s 2 45 Rh 4d 7 5s 2 46 Pd 4d 8 5s 2 47 Ag 4d 9 5s 2 48 Cd 4d 10 5s 2 49 In 5s 2 p 1 50 Sn 5s 2 p 2 51 Sb 5s 2 p 3 52 Te 5s 2 p 4 53 I 5s 2 p 5 54 Xe 5s 2 p 6 57 La 4f 1 6s 2 58 Ce 4f 2 6s 2 59 Pr 4f 3 6s 2 60 Nd 4f 4 6s 2 61 Pm 4f 5 6s 2 62 Sm 4f 6 6s 2 63 Eu 4f 7 6s 2 64 Gd 4f 8 6s 2 65 Tb 4f 9 6s 2 66 Dy 4f 10 6s 2 67 Ho 4f 11 6s 2 68 Er 4f 12 6s 2 69 Tm 4f 13 6s 2 70 Yb 4f 14 6s 2 71 Lu 5d 1 6s 2 72 Hf 5d 2 6s 2 73 Ta 5d 3 6s 2 74 W 5d 4 6s 2 75 Re 5d 5 6s 2 76 Os 5d 6 6s 2 77 Ir 5d 7 6s 2 78 Pt 5d 8 6s 2 79 Au 5d 9 6s 2 80 Hg 5d 10 6s 2 81 Tl 6s 2 p 1 82 Pb 6s 2 p 2 83 Bi 6s 2 p 3 84 Po 6s 2 p 4 85 At 6s 2 p 5 86 Rn 6s 2 p 6 87 Fr 7s 1 56 Ba 6s 2 88 Ra 7s 2 89 Ac 5f 1 7s 2 90 Th 5f 2 7s 2 91 Pa 5f 3 7s 2 92 U 5f 4 7s 2 93 Np 5f 5 7s 2 94 Pu 5f 6 7s 2 95 Am 5f 7 7s 2 96 Cm 5f 8 7s 2 97 Bk 5f 9 7s 2 98 Cf 5f 10 7s 2 99 Es 5f 11 7s 2 101 Md 5f 13 7s 2 102 Nb 5f 14 7s 2 51. Elemento: DeZ =103 a Z =111 Desde el LAURENCIO hasta el ROENTGENIO Configuracin electrnica externa: De6d 1 7s 2 a6d 9 7s 2 100 Fm 5f 12 7s 2 55 Cs 6s 1 12 Mg 3s 2 5 B 2s 2 p 1 2 He 1s 2 1 H 1s 1 3 Li 2s 1 4 Be 2s 2 6 C 2s 2 p 2 7 N 2s 2 p 3 8 O 2s 2 p 4 9 F 2s 2 p 5 10 Ne 2s 2 p 6 11 Na 3s 1 13 Al 3s 2 p 1 14 Si 3s 2 p 2 15 P 3s 2 p 3 16 S 3s 2 p 4 17 Cl 3s 2 p 5 18 Ar 3s 2 p 6 19 K 4s 1 20 Ca 4s 2 21 Sc 3d 1 4s 2 22 Ti 3d 2 4s 2 23 V 3d 3 4s 2 24 Cr 3d 4 4s 2 25 Mn 3d 5 4s 2 26 Fe 3d 6 4s 2 27 Co 3d 7 4s 2 28 Ni 3d 8 4s 2 29 Cu 3d 9 4s 2 30 Zn 3d 10 4s 2 31 Ga 4s 2 p 1 32 Ge 4s 2 p 2 33 As 4s 2 p 3 34 Se 4s 2 p 4 35 Br 4s 2 p 5 36 Kr 4s 2 p 6 37 Rb 5s 1 38 Sr 5s 2 39 Y 4d 1 5s 2 40 Zr 4d 2 5s 2 41 Nb 4d 3 5s 2 42 Mo 4d 4 5s 2 43 Tc 4d 5 5s 2 44 Ru 4d 6 5s 2 45 Rh 4d 7 5s 2 46 Pd 4d 8 5s 2 47 Ag 4d 9 5s 2 48 Cd 4d 10 5s 2 49 In 5s 2 p 1 50 Sn 5s 2 p 2 51 Sb 5s 2 p 3 52 Te 5s 2 p 4 53 I 5s 2 p 5 54 Xe 5s 2 p 6 57 La 4f 1 6s 2 58 Ce 4f 2 6s 2 59 Pr 4f 3 6s 2 60 Nd 4f 4 6s 2 61 Pm 4f 5 6s 2 62 Sm 4f 6 6s 2 63 Eu 4f 7 6s 2 64 Gd 4f 8 6s 2 65 Tb 4f 9 6s 2 66 Dy 4f 10 6s 2 67 Ho 4f 11 6s 2 68 Er 4f 12 6s 2 69 Tm 4f 13 6s 2 70 Yb 4f 14 6s 2 71 Lu 5d 1 6s 2 72 Hf 5d 2 6s 2 73 Ta 5d 3 6s 2 74 W 5d 4 6s 2 75 Re 5d 5 6s 2 76 Os 5d 6 6s 2 77 Ir 5d 7 6s 2 78 Pt 5d 8 6s 2 79 Au 5d 9 6s 2 80 Hg 5d 10 6s 2 81 Tl 6s 2 p 1 82 Pb 6s 2 p 2 83 Bi 6s 2 p 3 84 Po 6s 2 p 4 85 At 6s 2 p 5 86 Rn 6s 2 p 6 87 Fr 7s 1 56 Ba 6s 2 88 Ra 7s 2 89 Ac 5f 1 7s 2 90 Th 5f 2 7s 2 91 Pa 5f 3 7s 2 92 U 5f 4 7s 2 93 Np 5f 5 7s 2 94 Pu 5f 6 7s 2 95 Am 5f 7 7s 2 96 Cm 5f 8 7s 2 97 Bk 5f 9 7s 2 98 Cf 5f 10 7s 2 99 Es 5f 11 7s 2 101 Md 5f 13 7s 2 102 Nb 5f 14 7s 2 103 Lr 6d 1 7s 2 104 Rf 6d 2 7s 2 105 Db 6d 3 7s 2 106 Sg 6d 4 7s 2 107 Bh 6d 5 7s 2 108 Hs 6d 6 7s 2 109 Mt 6d 7 7s 2 110 Ds 6d 8 7s 2 111 Rg 6d 9 7s 2 52. Excepcin: HELIO ( Z=2) Este elemento muestra las propiedades caractersticas de los gases nobles (Ne-Ar-Kr-Xe-Rn) por lo debe trasladarse a la ltima columna de la Tabla: 100 Fm 5f 12 7s 2 55 Cs 6s 1 12 Mg 3s 2 5 B 2s 2 p 1 2 He 1s 2 1 H 1s 1 3 Li 2s 1 4 Be 2s 2 6 C 2s 2 p 2 7 N 2s 2 p 3 8 O 2s 2 p 4 9 F 2s 2 p 5 10 Ne 2s 2 p 6 11 Na 3s 1 13 Al 3s 2 p 1 14 Si 3s 2 p 2 15 P 3s 2 p 3 16 S 3s 2 p 4 17 Cl 3s 2 p 5 18 Ar 3s 2 p 6 19 K 4s 1 20 Ca 4s 2 21 Sc 3d 1 4s 2 22 Ti 3d 2 4s 2 23 V 3d 3 4s 2 24 Cr 3d 4 4s 2 25 Mn 3d 5 4s 2 26 Fe 3d 6 4s 2 27 Co 3d 7 4s 2 28 Ni 3d 8 4s 2 29 Cu 3d 9 4s 2 30 Zn 3d 10 4s 2 31 Ga 4s 2 p 1 32 Ge 4s 2 p 2 33 As 4s 2 p 3 34 Se 4s 2 p 4 35 Br 4s 2 p 5 36 Kr 4s 2 p 6 37 Rb 5s 1 38 Sr 5s 2 39 Y 4d 1 5s 2 40 Zr 4d 2 5s 2 41 Nb 4d 3 5s 2 42 Mo 4d 4 5s 2 43 Tc 4d 5 5s 2 44 Ru 4d 6 5s 2 45 Rh 4d 7 5s 2 46 Pd 4d 8 5s 2 47 Ag 4d 9 5s 2 48 Cd 4d 10 5s 2 49 In 5s 2 p 1 50 Sn 5s 2 p 2 51 Sb 5s 2 p 3 52 Te 5s 2 p 4 53 I 5s 2 p 5 54 Xe 5s 2 p 6 57 La 4f 1 6s 2 58 Ce 4f 2 6s 2 59 Pr 4f 3 6s 2 60 Nd 4f 4 6s 2 61 Pm 4f 5 6s 2 62 Sm 4f 6 6s 2 63 Eu 4f 7 6s 2 64 Gd 4f 8 6s 2 65 Tb 4f 9 6s 2 66 Dy 4f 10 6s 2 67 Ho 4f 11 6s 2 68 Er 4f 12 6s 2 69 Tm 4f 13 6s 2 70 Yb 4f 14 6s 2 71 Lu 5d 1 6s 2 72 Hf 5d 2 6s 2 73 Ta 5d 3 6s 2 74 W 5d 4 6s 2 75 Re 5d 5 6s 2 76 Os 5d 6 6s 2 77 Ir 5d 7 6s 2 78 Pt 5d 8 6s 2 79 Au 5d 9 6s 2 80 Hg 5d 10 6s 2 81 Tl 6s 2 p 1 82 Pb 6s 2 p 2 83 Bi 6s 2 p 3 84 Po 6s 2 p 4 85 At 6s 2 p 5 86 Rn 6s 2 p 6 87 Fr 7s 1 56 Ba 6s 2 88 Ra 7s 2 89 Ac 5f 1 7s 2 90 Th 5f 2 7s 2 91 Pa 5f 3 7s 2 92 U 5f 4 7s 2 93 Np 5f 5 7s 2 94 Pu 5f 6 7s 2 95 Am 5f 7 7s 2 96 Cm 5f 8 7s 2 97 Bk 5f 9 7s 2 98 Cf 5f 10 7s 2 99 Es 5f 11 7s 2 101 Md 5f 13 7s 2 102 Nb 5f 14 7s 2 103 Lr 6d 1 7s 2 104 Rf 6d 2 7s 2 105 Db 6d 3 7s 2 106 Sg 6d 4 7s 2 107 Bh 6d 5 7s 2 108 Hs 6d 6 7s 2 109 Mt 6d 7 7s 2 110 Ds 6d 8 7s 2 111 Rg 6d 9 7s 2 2 He 1s 2 53. TABLA PERIDICA ACTUAL 100 Fm 5f 12 7s 2 55 Cs 6s 1 12 Mg 3s 2 5 B 2s 2 p 1 1 H 1s 1 3 Li 2s 1 4 Be 2s 2 6 C 2s 2 p 2 7 N 2s 2 p 3 8 O 2s 2 p 4 9 F 2s 2 p 5 10 Ne 2s 2 p 6 11 Na 3s 1 13 Al 3s 2 p 1 14 Si 3s 2 p 2 15 P 3s 2 p 3 16 S 3s 2 p 4 17 Cl 3s 2 p 5 18 Ar 3s 2 p 6 19 K 4s 1 20 Ca 4s 2 21 Sc 3d 1 4s 2 22 Ti 3d 2 4s 2 23 V 3d 3 4s 2 24 Cr 3d 4 4s 2 25 Mn 3d 5 4s 2 26 Fe 3d 6 4s 2 27 Co 3d 7 4s 2 28 Ni 3d 8 4s 2 29 Cu 3d 9 4s 2 30 Zn 3d 10 4s 2 31 Ga 4s 2 p 1 32 Ge 4s 2 p 2 33 As 4s 2 p 3 34 Se 4s 2 p 4 35 Br 4s 2 p 5 36 Kr 4s 2 p 6 37 Rb 5s 1 38 Sr 5s 2 39 Y 4d 1 5s 2 40 Zr 4d 2 5s 2 41 Nb 4d 3 5s 2 42 Mo 4d 4 5s 2 43 Tc 4d 5 5s 2 44 Ru 4d 6 5s 2 45 Rh 4d 7 5s 2 46 Pd 4d 8 5s 2 47 Ag 4d 9 5s 2 48 Cd 4d 10 5s 2 49 In 5s 2 p 1 50 Sn 5s 2 p 2 51 Sb 5s 2 p 3 52 Te 5s 2 p 4 53 I 5s 2 p 5 54 Xe 5s 2 p 6 57 La 4f 1 6s 2 58 Ce 4f 2 6s 2 59 Pr 4f 3 6s 2 60 Nd 4f 4 6s 2 61 Pm 4f 5 6s 2 62 Sm 4f 6 6s 2 63 Eu 4f 7 6s 2 64 Gd 4f 8 6s 2 65 Tb 4f 9 6s 2 66 Dy 4f 10 6s 2 67 Ho 4f 11 6s 2 68 Er 4f 12 6s 2 69 Tm 4f 13 6s 2 70 Yb 4f 14 6s 2 71 Lu 5d 1 6s 2 72 Hf 5d 2 6s 2 73 Ta 5d 3 6s 2 74 W 5d 4 6s 2 75 Re 5d 5 6s 2 76 Os 5d 6 6s 2 77 Ir 5d 7 6s 2 78 Pt 5d 8 6s 2 79 Au 5d 9 6s 2 80 Hg 5d 10 6s 2 81 Tl 6s 2 p 1 82 Pb 6s 2 p 2 83 Bi 6s 2 p 3 84 Po 6s 2 p 4 85 At 6s 2 p 5 86 Rn 6s 2 p 6 87 Fr 7s 1 56 Ba 6s 2 88 Ra 7s 2 89 Ac 5f 1 7s 2 90 Th 5f 2 7s 2 91 Pa 5f 3 7s 2 92 U 5f 4 7s 2 93 Np 5f 5 7s 2 94 Pu 5f 6 7s 2 95 Am 5f 7 7s 2 96 Cm 5f 8 7s 2 97 Bk 5f 9 7s 2 98 Cf 5f 10 7s 2 99 Es 5f 11 7s 2 101 Md 5f 13 7s 2 102 Nb 5f 14 7s 2 103 Lr 6d 1 7s 2 104 Rf 6d 2 7s 2 105 Db 6d 3 7s 2 106 Sg 6d 4 7s 2 107 Bh 6d 5 7s 2 108 Hs 6d 6 7s 2 109 Mt 6d 7 7s 2 110 Ds 6d 8 7s 2 111 Rg 6d 9 7s 2 2 He 1s 2 54. d 1 ELECTRN DIFERENCIADOR Y POSICIN EN LA TABLA d 2 d 3 d 4 d 5 d 6 d 7 d 8 d 9 d 10 f 1 f 13 f 14 f 12 f 11 f 10 f 9 f 8 f 7 f 6 f 5 f 4 f 3 f 2 p 1 p 2 p 3 p 4 p 5 p 6 s 2 s 1 55. NMERO DE CAPAS Y POSICIN EN LA TABLA 1 2 3 4 5 6 6 7 7