S-orbitals

p-orbitals

Barium

#30 How many electrons are in the highest occupied energy level of these atoms:

2 electrons are in the 6th level

Sodium 1 electrons are in the 3th level

Aluminum 3 electrons are in the 3th level

Oxygen 6 electrons are in the 2nd level

aufbau principlePauli exclusion principleHund’s rule

#31

#32

15: 1s22s22p63s23p3

phosphorous

Write the electron configurations for the elements that are identified only bythese atomic numbers.

#32

12: 1s22s22p63s2

Magnesium

Write the electron configurations for the elements that are identified only bythese atomic numbers.

#32

9: 1s22s22p5

fluorine

Write the electron configurations for the elements that are identified only bythese atomic numbers.

#32

18: 1s22s22p63s23p6

argon

Write the electron configurations for the elements that are identified only bythese atomic numbers.

#33 What is meant by 3p3?

3p3

#34 Give electron configurations for atomsof these elements:

Na =111s22s22p63s1

#34 Give electron configurations for atomsof these elements:

S=161s22s22p63s23p4

#34 Give electron configurations for atomsof these elements:

Mg = 121s22s22p63s2

#34 Give electron configurations for atomsof these elements:

Ne=101s22s22p6

#34 Give electron configurations for atomsof these elements:

K=191s22s22p63s23p64s1

#35 Which of these orbitaldesignations are invalid?

a. 4s

b. 3f

c. 2d

d. 3d

#36 What is the maximum number of electrons that can go into each of the following sublevels?

a. 2s

b. 3p

c. 4s

d. 3d

#36

e. 4p

f. 5s

g. 4f

h. 5p

#37 Arrange the following sublevels in order of increasing energy:3d, 2s, 4s, 3p

2s3p4s3d

#38 How many electrons are in the second energy level of an atom ofeach element?

a. chlorine

b. phosphorous

c. potassium

1s22s22p63s23p64s1

1s22s22p63s23p3

1s22s22p63s23p5

#39 Write electron configuations foratoms of these elements:

a. selenium 34b. vanadium

c. nickel

d. calcium

1s22s22p63s23p64s23d10

4p4

1s22s22p63s23p64s23d3

1s22s22p63s23p64s23d8

1s22s22p63s23p64s2