In the complex, CoCl3. 4NH3, the primary valency of the central metal is satisfied by
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a
Two chloride ions
b
Two chloride ions and four ammonia molecules
c
Three chloride ions
d
One chloride ion
answer is C.
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Detailed Solution
According to Werner's theory, primary valency of a metal is satisfied by negative ions only.Werner formula …CoCl3. 4NH3Modern formula . . .Co(NH3)4Cl2ClTwo chloride ions satisfy both primary and secondary valency. One chloride ion satisfies only primary valency.