Worksheet on Subatomic Particles

Determine the number of protons, neutrons, and electrons of the following ions.

Name Symbol Mass Charge Protons Neutrons Electrons

Calcium 41 +2

Bromine 72 -1

Carbon 14 0

Sodium 23 +2

Chlorine 37 -2

Oxygen 16 -2

Nitrogen 14 -2

Lithium 7 +1

Fluorine 19 +2

Argon 36 0

Neon 22 0

Helium 4 +2

Boron 10 -2

Name Symbol Mass Charge Proton Neutron Electron

Si 28 18

Aluminum 14 10

15 16 18

70 +3 33

Cr +2 28

Potassium -2 20

Mg 26 10

Nickel 30 26

17 18 18

32 -2 16

Zn +2 32

Iron +3 28

Kr 74 36

Phosphorous +2 15