Asseration: `SeCl_(4)`, does not havea tetrahedral structure.
Reason: `Se` in `SeCl_(4)` has two lone pairs.

Options

A. If both assertion and reason are correct, and reason is the correct explanation of the assertion.
B. If both assertion and reason are correct , but reason is not the correct explanation of the assertion.
C. If assertion is correct, but reason is incorrect .
D. If both assertion and reason are incorrect.

Answer

c

Explanation

`SeCl_(4)` has distorted trigonal bipyramidal structrue
Hence, assertion is ture .
Correct R . Se in `SeCl_(4)` has one lone pair
Se has the outer shell electronic configuration
` 4s^(2) 4p_(x)^(2) 4p_(y)^(1) 4p_(z)^(1) ` or in the excited state it is ` 4s^(2) 4p_(x)^(1) p_(x)^(1) 4p_(y)^(1) 4p_(z)^(1) 4d^(1)`. it undergoes `sp^(3) d `
hybridization . In the trigonal bipyramidal structure, one position of the triangular base is occupied by one lone pair . The distortion in shape is due to the
presence of this lone pair .