First slide

IUPAC Nomenclature

Question

IUPAC name of $[Co {({NH}_{3})}_{5} {NO}_{2}] {Cl}_{2}$

Moderate

A

Pentamminenitrocobalt (III) chloride
B

Pentaminenitrosocobalt (III) chloride
C

Pentaminenitrocobalt (II) chloride
D

None of these

Solution

ln the compounds $[Co {({NH}_{3})}_{5} {NO}_{2}] {Cl}_{2}$ the oxidation state of cobalt is +3 and here 5 NH₃ ligands, a NO₂ ligand are attached to the central atom. Therefore its name is pentaamminenitrocobalt (Ill) chloride.

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