Question

According to IUPAC nomenclature sodium nitroprusside is named as

• A. sodium pentacyanonitrosyl ferrate (II)
• B. sodium pentacyanonitrosyl ferrate (III)
• C. sodium nitroferricyanide
• D. sodium nitroferrocyanide

Answer 1

Answer: (B)

sodium pentacyanonitrosyl ferrate (III)

Answer 2

The formula of sodium nitroprusside is $Na _2 [Fe(CN)_5NO$]. Its IUPAC name is sodium pentacyanonitrosyl ferrate (II). The name of sodium cation is written first. the names of ligands are writen in alphabetical order. The name of iron metal is written as ferrate. The roman numeral III indicates oxidation state.