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Chemical Bonding and Molecular Structure question

2004 · Q103
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Chemical Bonding and Molecular Structure question

2004 · Q103

NEETChemistryChemical Bonding and Molecular StructureMCQ+4 / −1
Among the following, the pair in which the two species are not isostructural is
  1. A
    SiF4 and SF4
  2. B
    IO3−-− and XeO3
  3. C
    BH4−-− and NH4+
  4. D
    PF6−-− and SF6
View written solutionFree

Correct answer: A

SiF4 has symmetrical tetrahedral shape which is due to sp3 hybridisation of the central silicon atom in its excited state configuration.

SF4 has distorted tetrahedral or sea-saw geometry which arises due to sp3d hybridisation of the central sulphur atom and due to the presence of one lone pair of electrons in one of the equatorial hybrid orbital.

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