Write the type of isomerism exhibited by the following complexes:
(i) `[Co(NH_(3))_(5)Cl]SO_(4)`
(ii) `[Co(en)_(3)]^(+3)`
(iii) `[Co(NH_(3))_(6)][Cr(CN)_(6)]`

Explanation

To determine the type of isomerism exhibited by the given coordination complexes, we will analyze each complex step by step.

### Step 1: Analyze the first complex `[Co(NH₃)₅Cl]SO₄`
- This complex consists of a cobalt ion coordinated with five ammonia (NH₃) ligands and one chloride (Cl) ligand, with a sulfate (SO₄) ion outside the coordination sphere.
- When dissolved in water, it can produce different ions: `[Co(NH₃)₅Cl]²⁺` and `SO₄²⁻`.
- Alternatively, if the sulfate ion were to be coordinated with cobalt, it would produce a different set of ions.
- This leads us to conclude that this complex exhibits **ionization isomerism**, as the different ions can be formed upon dissolution.

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