`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 IUPAC name of the complexes (X) and (Y) are respectively:

Options

A. Tetrathiocyanato-S-cobalt(II) and Bis(dimethylglyoximate) nickel(II)
B. Tetrathiocyanato-S-cobaltate(II) and Bis(dimethylglymato) nickel(II)
C. Tetrathiocyanato-S-cobaltate(II) and Bis(dimethylglymato) nickelate(II)
D. Tetrathiocyanato-S-cobaltate(III) and Bis(dimethylglymato) nickel(II)

Answer

B

Explanation

`(X)=[Co(SCN)_4]^(2-),(Y)=[Co(dmg)_2]`