Question

Identify the salts pair which contain the same number of ions per molecule.
(i) Aluminium phosphate
(ii) Potassium sulphite
(iii) Barium phosphate
(iv) Magnesium nitride

• A. i, iii, iv
• B. ii, iv
• C. i, iii
• D. iii, iv

Answer 1

The correct option is D iii, iv

(i) Aluminium phosphate, $AlP{O}_4$ has has $2$ ions per molecule.
(ii) Potassium sulphitem, $K_{2}S{O}_3$ has $3$ ions per molecule.
(iii) Barium phosphate, $B{a}_3(P{O}_4{)}_2$ has $5$ ions per molecule
(iv) Magnesium nitride $\left(M{g}_3{N}_2\right)$ has $5$ ions per molecule.