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Asked by Shambhuhd79 | 22nd Jun, 2020, 11:09: AM

Expert Answer:

Coordination compound is [CoBr2(NH3)4] Cl
 
AgNO3 reacts with this complex and forms AgCl and [CoBr2(NH3)4] NO3
 
Counter ion is the ion which does not take part in coordination number of complex and balances the charge of cooordination sphere. Here Cl is the ion that is outside coordinationn sphere and not taking part in coordination number. So, one halide ion is counter ion in 1 complex compound.

Answered by Ravi | 22nd Jun, 2020, 06:12: PM