Using IUPAC norms write the formulae for the following :
Pentaamminenitrito-O-cobalt (III) chloride

Explanation

To write the formula for the complex "Pentaamminenitrito-O-cobalt (III) chloride" using IUPAC nomenclature, we can follow these steps:

### Step 1: Identify the Central Metal Ion
The central metal ion in this complex is cobalt. According to IUPAC nomenclature, we denote cobalt with the symbol "Co".

### Step 2: Determine the Oxidation State of the Central Metal Ion
The name indicates that cobalt is in the +3 oxidation state (as denoted by "(III)"). Therefore, we will consider Co as Co³⁺.

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