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Among the following the pair in which the two species are not isostructural is:
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Verified Answer
The correct answer is:
$\mathrm{SiF}_4$ and $\mathrm{SF}_4$
$\mathrm{SiF}_4$ and $\mathrm{SF}_4$ are not isostructural because $\mathrm{SiF}_4$ is tetrahedral due to $s p^3$ hybridisation while $\mathrm{SF}_4$ has distorted tetrahedral geometry due to presence of lone pair.
Related Theory
Two molecules are isostructural if they have a similar number of atoms arranged in a similar structure (spatial coordinates).
Caution
If they have same number of lone pair and bond pair, they are considered as isostructural.
Related Theory
Two molecules are isostructural if they have a similar number of atoms arranged in a similar structure (spatial coordinates).
Caution
If they have same number of lone pair and bond pair, they are considered as isostructural.
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