Which would exhibit ionisation isomerism

Options

(a) [Co(NH₃)₄] [Cr(C₂O₄)₃]
(b) [CoBr(NH₃)₅]²⁺SO₄²⁻
(c) [CoBr(NH₃)₅]
(d) K₃(Fe(CN)₆]

Correct Answer:

[CoBr(NH₃)₅]²⁺SO₄²⁻

Explanation:

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