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A complex compound of Co^(3+) with mole...

A complex compound of ` Co^(3+)` with molecular formula `COCl_x. yNH_3` gives a totall of 3 ions when dissolved in water. How many ` Cl^-` ions when the primary and secondary valency in this complex ?

A

3

B

1

C

4

D

Zero

Text Solution

Verified by Experts

The correct Answer is:
(b)
The coordination number of cobalt in `Co^3+` will be '6' Siince the given compound gives 3 ions when dissolved in water , its structural formula should be `[Cocl(NH_3)_5]Cl_2`
`[CoCl(Nh_3)_5] Cl_2=[CoCl(NH_3)_5]^2+ +2Cl^-`
therefroe , only one chlorine atom satisfies both primary and secondary valency of `Co^3`.
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