Question

Classify the cations and anions:
(i) nitride ion (ii) stannous ion (iii) ferric ion (iv) hydroxide ion

Answer 1

(i) Nitride ion is $N^{3-}$. Since its is a negatively charged ion, it is an anion.

(ii) Stannous ion is $S{n}^{2+}$. It is a positively charged ion, hence it is a cation.

(iii) $F{e}^{3+}$ is ferric ion. It is a cation as it is positively charged ion.

(iv) $O{H}^{-}$ is hydroxide ion. Since it is a negatively charged ion, it is an anion.