Question

`Co^(2+)(aq.) +SCN^(-)(aq.) rarr `Complexe (X)
`Ni^(2+)(aq.)+"Dimetyhlglyoxime" overset(NH_(4)OH)rarr ` complex (Y)
The coordination number of cobalt and nickel in complexes X and Y are four.
The IUPAC names of the complexes (X) and (Y) are respectively :
A. tetrathicyanato-S -Cobalt (II) and bis (dimethylglyoximate ) nickel (II).
B. tetrathicyanato-S -Cobaltate (II) and bis (dimethylglyoximato ) nickel (II).
C. tetrathicyanato-S -Cobaltate (II) and bis (dimethylglyoximato ) nickelate (II).
D. tetrathicyanato-S -Cobaltate (II) and bis (dimethylglyoximato) nickel (II).

Answer 1

(B), `(X)=[Co(SCN)_(4)]^(2-), Y=[Ni(dmg)_(2)].`