1.

Co^(2+)(aq.)+SCN^(-)(aq.)to"Complex"(X) Ni^(2+)(aq.)+"Dimethylglyoxime"overset(NH_4OH)to"Complex"(Y). The coordination number of cobalt and nickel in complexes X and Y is four. The geometry of complexes (X) and (Y) are respectively :

Answer»

TETRAHEDRAL and square PLANAR
Both tetrahedral
Square planar and tetrahedral
Both square planar

Solution :`X=[Co(SCN)_4]^(2-)`, cobalt is in +2 oxidation state and `SCN^-` is weak field ligand. So,

`Y=[Ni(dmg)_2]`:NICKEL is in +2 oxidation state and dmg is chelating ligand. So,


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