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Chemical Bonding And Molecular Structure

Question
CBSEENCH11008344
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In which of the following pairs, both the species are not isostructural?

  • SiCl4.PCl4+

  • Diamond, carbide

  • NH3, PH3

  • XeF4,XeO4

Solution

D.

XeF4,XeO4

a) SiCl4.PCl4+ : Both are isostructural because their central atom is sp3 hybridised and both have a tetrahedral arrangement.
b) Diamond and silicon carbide (SiC): Both are isostructural because their central atom is sp3 hybridised and both have a  tetrahedral arrangement.
c) NH3 and PH3 have sp3 geometry.
d) XeF4 has sp3d2 hybridizations while XeO4 has sp3 hybridizations.Hence, XeF4 and XeO4 are not isostructural.

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