elements
3 protons
lithium
hydrogen
1
helium
2
Na
cation
Li
3
Ca
Calcium
oxygen
6
Si
14
fluorine
anion
Magnesium
12
Fe
iron
Nitrogen
5
Mg
12
beryllium
cation
calcium
20
Group 1, Period 3
magnesium
P
5
B
6
S
anion
26
19 protons
Potassium
krypton
8
Bromine
45
Argon
noble gas
Gold
79