First slide

Werner's theory

Question

According to werner primary valency of central atom in $[Pt (en) {(H_{2} O)}_{2} {Cl}_{2}] {Cl}_{2}$ Complex is

Moderate

A

5
B

3
C

6
D

4

Solution

$[Pt (en) {(H_{2} O)}_{2} {Cl}_{2}] {Cl}_{2}$ For this, $x + (2 x 0) + 2 (0) + 4 (- 1) = 0; X = + 4$ , primary valency satisfied by negative ligands/ species i.e Cl^- , so primary valency = 4

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