`CoSO_(4)Cl.5 NH_(3)` exists in two isomeric forms 'A' and 'B'. Isomer 'A' reacts with `AgNO_(3)` to give white precipitate, but does not react with `BaCl_(2)`. Isomer 'B' gives white precipitate with `BaCl_(2)` but does not react with `AgNO_(3)`. Answer the following questions.
(a) Identify 'A' and 'B' and write their structural formulae.
(b) Name the type of isomerism involved.
(c) Give the IUPAC name of 'A' and 'B'.

Explanation

To solve the given question step by step, we will analyze the information provided about the two isomers 'A' and 'B' of the coordination compound CoSO₄Cl·5NH₃.

### Step 1: Identify Isomer 'A' and Isomer 'B'

1. **Isomer 'A'**:
- It reacts with AgNO₃ to give a white precipitate, indicating the presence of Cl⁻ ions (which form AgCl precipitate).
- It does not react with BaCl₂, suggesting that it does not contain SO₄²⁻ ions in a form that can react to form BaSO₄ precipitate.
- Therefore, isomer 'A' must have the chloride ion as a coordinated ligand.
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