Assertion : \(\mathrm{SeCl}_4\) does not have a tetrahedral structure. Reason : \(\mathrm{Se}\) in…
Assertion : \(\mathrm{SeCl}_4\) does not have a tetrahedral structure.
Reason : \(\mathrm{Se}\) in \(\mathrm{SeCl}_4\) has two lone pairs.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
Solution
$\mathrm{SeCl}_4$ possesses see-saw geometry, which can be regarded as a distorted trigonal bipyramidal structure, having one lone pair of electrons in the basal position of the trigonal bipyramid. See-saw geometry of $\mathrm{SeCl}_4$ molecules arises due to the $s p^3 d$ hybridisation of the central atom. The distortion in shape is due to the presence of one lone pair of electrons.