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[NiCl(4)]^(2-) is an outer orbital compl...

`[NiCl_(4)]^(2-)` is an outer orbital complex. Give:
(1) the type of hybridisation in `Ni^(2+)`
(2) the orbitals involved in hybridisation.

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The coordination number of `Ni^(2+)` in the given complex ion = 4. It is an outer orbital complex and has a tetrahedral geometry.
(1) The type of hybridisation in `Ni^(2+)=sp^(3)`.
(2) The orbitals involved in hybridisation : 4s and 4p.
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