A solution of Hg2+ ion on treatment with a solution of cobalt(II) thiocyanate gives rise to a deep blue crystalline precipitate, then the coordination number of mercury in the deep blue colored compound is :
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Solution
A solution of Hg2+ ion on treatment with a solution of cobalt(II) thiocyanate gives rise to a deep blue crystalline precipitate. Then the coordination number of mercury in the deep blue colored compound is 4. Hg2++2Co(SCN)2→Co[Hg(SCN)4]↓deep blue crystalline precipitate+Co2+