According to IUPAC nomenclature sodium nitroprusside is named as

Options

A. sodium pentacyanon1trosyl ferrate (II)
B. sod1urr1p entacyanonitrosyl ferrate (Ill)
C. sodium nitrofemcyanide
D. sodium nitroferrocyanide

Answer

B

Explanation

IUPAC name of sodium nitroprusside `Na_(2)[Fe(CN)_(5).NO]` is sodium pentacyanoni trosyl ferrate (III) because in it NO is neutral ligand and the oxidation number of Fe is + 3. Which is calculated as `Na_(2)[Fe(CN)_(5)NO]`
`2xx(+1)+x+5xx(-1)+1xx0=0`
[where x= oxidation state of Fe]
`2+x-5=0`
`x-3=0`
`x=+3`