First slide

Werner's theory

Question

According to werner theory Duel valency of central atom in $[Co {({NH}_{3})}_{4} {Cl}_{2}] Cl$ Complex is

Moderate

A

1
B

3
C

0
D

2

Solution

The ligand satisfy primary and secondary valency is called duel valency. that means ligand involved in calculation of primary and secondary valency. Hence one 2Cl^- act as primary and secondary valency in given complex $[Co {({NH}_{3})}_{4} {Cl}_{2}] Cl$ , so duel valency of $[Co {({NH}_{3})}_{4} {Cl}_{2}] Cl$ Complex is 2

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