Cations (+)
Li+
Na+
K+
Rb+
Cs+
Be2+
Mg2+
Ca2+
Sr2+
Ba2+
Ra2+
B3+
Al3+
Ga3+

Predict the charge of ...

⟷
+ charge
0
Drop ions above to bond
− charge
0
Anions (−)
F−
Cl−
Br−
I−
O2−
S2−
Se2−
N3−
P3−