First slide

Werner's theory

Question

According to werner primary valency of central atom in $[Cr {(H_{2} O)}_{6}] {Cl}_{3}$ Complex is

Moderate

A

5
B

3
C

6
D

4

Solution

$[Cr {(H_{2} O)}_{6}] {Cl}_{3}$ For this, $x + 6 (0) + 3 (- 1) = 0; X = + 3$ , primary valency satisfied by negative ligands/ species i.e Cl^- , so primary valency = 3

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