Know your ions forwards and backwards

nitrite ion

hydroxide ion

• carbonate

• carbon trioxide

• carbonite

• oxycarboylate

• carbanion

phosphate ion

• PO₄^3-

• P^3-

• PO₃^2-

• PO₃^3-

What's the charge on a chloride ion?

• -1

• -2

• +1

• +2

• +3

What's the charge on a carbonate ion?

• -2

• -1

• +1

• -4

What's the charge of a silver cation?

• +1

• +2

• +3

• -1

• -2

Answer explanation

Silver ions are only ever found commonly with one charge: +1