In Zn₃(PO₄)₂, the valency of Zn and Phosphate respectively is:

1. 3 and 2
2. 2 and 6
3. 4 and 6
4. 2 and 3

2 and 3

Reason — Given the formula Zn₃(PO₄)₂ :

$\text{Zn}$3(\text{PO}4)2 = \underset{\phantom{2}{3}}{\text{Zn}} \space {\nearrow}\mathllap{\nwarrow} \space \underset{2}{\text{PO}4} \Rightarrow \overset{\phantom{3}{2}}{\text{Zn}} \space {\nearrow}\mathllap{\nwarrow} \space \overset{3}{\text{PO}_4} \\[0.5em]

∴ Valency of Zinc is 2 and Phosphate is 3.