Question

Identify the correct naming for K3[Fe(CN)6].

(a) Tripotassium hexacyanidoferrate(III)

(b) Potassium hexacyanoferrate(III)

(c) Tripotassium hexacyanoferrate(III)

(d) Potassium hexacyanidoferrate(III)

The question was asked in semester exam.

The above asked question is from Nomenclature of Coordination Compounds topic in portion Coordination Compounds of Chemistry – Class 12

Answer 1

Correct answer is (d) Potassium hexacyanidoferrate(III)

For explanation: The number of cations or anions is not denoted in the name of a coordination compound. In this case, the counter ion is named as potassium and not tripotassium. Also, CN is an anionic ligand and should end with -o, with the correct name being cyanido and not cyano.