Question

Do ionic bonds occur between metal and non-metal ions, non-metal and non-metal ions, or metal and metal ions?

Answer 1

Ionic bonds occur between cations and anions..............

Explanation:

Ionic bonds occur between anions and cations. And cations may be metallic, i.e., `M^(2+)`, or they may be non-metallic, i.e. ammonium salts, `NH_4^+`. And anions, while typically non-metallic, i.e. `X^-` `"(X = F, Cl, Br)"`, may be metallic, i.e. `Cr_2O_7^(2-)`, or `MnO_4^-`, or at least containing a metal centre. Confused yet?

The point is that an ionic bond is an electrostatic bond formed between anion and cation, whatever the source.