First slide

IUPAC Nomenclature

Question

In which of the following complex while naming the complex, the suffix “-ate” is used after the name of the central metal ion

Easy

A

$[Ni {(en)}_{3}] {Cl}_{2}$
B

$[Co {({NH}_{3})}_{3} {Cl}_{3}]$
C

${[Cr {(H_{2} O)}_{6}]}_{2} {({SO}_{4})}_{3}$
D

$K_{3} [Fe {(CN)}_{6}]$

Solution

The suffix “-ate” is used after the name of the complex only in anionic complexes;
Options 1,3 are cationic complexes whereas option 2 is a neutral complex;
Only option 4 is an anionic complex;
$K_{3} [Fe {(CN)}_{6}] ⇌ 3 K^{+} + {[Fe {(CN)}_{6}]}^{- 3}; Potassium hexacyanido ferrate (III) is its IUPAC name;$

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