Formula Moles of AgCl precipitated per mole of the compounds with excess AgNO N 3 I PdCl 2 ⋅ 4 NH 3 2 II NiCl 2 ⋅ 6 H 2 O 2 III PtCl 4 ⋅ 2 HCl 0 IV CoCl 3 ⋅ 4 NH 3 1 V PtCl2 ⋅ 2 NH 3 0 The secondary valencies of I and III is

Question

Formula Moles of AgCl precipitated per mole of the compounds with excess AgNO N 3 I PdCl 2 ⋅ 4 NH 3 2 II NiCl 2 ⋅ 6 H 2 O 2 III PtCl 4 ⋅ 2 HCl 0 IV CoCl 3 ⋅ 4 NH 3 1 V PtCl2 ⋅ 2 NH 3 0 The secondary valencies of I and III is (A) 4 and 5 respectively (B) 4 and 6 respectively (C) 6 and 4 respectively (D) 2 and 4 respectively

Tardigrade Admin · Accepted Answer

Secondary valency means coordination number. So, the secondary valencies of I and III are 4 and 6 respectively.

Formula		Moles of AgCl precipitated per mole of the compounds with excess $A g NO N_{3}$
I	$P d C l_{2} \cdot 4 N H_{3}$	$2$
II	$N i C l_{2} \cdot 6 H_{2} O$	$2$
III	$PtC l_{4} \cdot 2 H Cl$	$0$
IV	$C o C l_{3} \cdot 4 N H_{3}$	$1$
V	$PtC l_{2} \cdot 2 N H_{3}$	$0$

$4$ and $5$ respectively

$4$ and $6$ respectively

$6$ and $4$ respectively

$2$ and $4$ respectively

Secondary valency means coordination number. So, the secondary valencies of $I$ and $III$ are $4$ and $6$ respectively.

Q. Formula Moles of AgCl precipitated per mole of the compounds with excess AgNON3​ I PdCl2​⋅4NH3​ 2 II NiCl2​⋅6H2​O 2 III PtCl4​⋅2HCl 0 IV CoCl3​⋅4NH3​ 1 V PtCl2​⋅2NH3​ 0 The secondary valencies of I and III is

4 and 5 respectively

4 and 6 respectively

6 and 4 respectively