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In XeF₂ and IF₂⁻, what is the hybridisation and shape?

1. sp hybridised and linear shape
2. sp² hybridised and bent shape
3. sp³d hybridised and linear shape
4. sp³ hybridised and tetrahedral shape

Correct answer: sp³d hybridised and linear shape

Solution

In both XeF₂ and IF₂⁻, the central atom has 5 regions of electron density (2 bond pairs and 3 lone pairs), leading to sp³d hybridisation. The lone pairs occupy equatorial positions, resulting in a linear shape.

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