1.

The coordination number of Ni^(2+) is 4 NiCl_(2)+KCN ("excess")rarr A("cyano complex") A + conc. HCl ("excess")rarr B ("chloro complex") The IUPAC names of A and B are

Answer»

POTASSIUM tetracyanonickeltate(II), potassium tetrachloronickeltate(II)
Tetracyanopotassium nickelate(II), tetrachloro-potassiumnickelate(II)
Tetracyanonickel(II), tetrachloronickel(II)
Potassium tetracyanonickel(II), potassium tetrachloronickel(II)

SOLUTION :`NiCl_(2)+4 KCNrarrK_(2)underset("tetracyanonickelate(II)")underset("Potassium")underset(("A"))([Ni(CN)_(4)])+2KCL`
`K_(2)[Ni(CN)_(4)]+4HCL ("excess")RARR underset("tetrachloronickelate(II)")underset("Potassium")(K_(2)[NiCl_(4)])+HCN`


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