First slide

Terms used in complex chemistry

Question

I) ${CoCl}_{3} . 6 {NH}_{3}$ II) ${CoCl}_{3} . 4 {NH}_{3}$
I and II differ in

Moderate

A

Primary valency of metal
B

Secondary valency of metal
C

Number of ionisable chloride ions
D

All of these

Solution

I) $[Co {({NH}_{3})}_{6}] {Cl}_{3}$
Primary valency …3
Secondary valency – 6
Ionizable ${Cl}^{-} ions - 3$
II) $[{CoCl}_{2} {({NH}_{3})}_{4}] Cl$
Primary valency …. 3
Secondary valency … 6
Ionizable ${Cl}^{-} ions - 1$

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