Ammonium NH4
+1
Hydrogen H
+1
Sodium Na
+1
Potassium K
+1
Rubidium Rb
+1
Caesium Cs
+1
Francium Fr
+1
(l) Copper Cu
+1
Silver Ag
+1
Thallium Tl
+1,+3
Chlorine Cl
+1,+3,+5,+7
-1 is most common
Bromine Br
+1,+3,+5,+7
-1 is most common
Iodine I
+1,+3,+5,+7
-1 is most common
Sulfur S
+2,+4,+6
-2 is most common
Beryllium Be
+2
Polonium Po
+2,+4