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Compare the stability of Ni^4+ and Pt^4+ from their ionisation enthalpy values.

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Compare the stability of Ni4+ and Pt4+ from their ionisation enthalpy values.

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IE Ni Pt
I 737 864
II 1753 1791
III 3395 2800
IV 5297 4150

Pt4+ compounds are stable than Ni4+ compounds because the energy needed to remove 4 electrons in Pt is less than that of Ni.

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