The d-orbital which is not involved in ${sp}^{3} d^{3}$ hybridisation in pentagonal bipyramidal geometry is:

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$d_{y z}$

$d_{x^{2} - y^{2}}$

$d_{x y}$

$d_{z^{2}}$

answer is D.

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Detailed Solution

The d-orbital is not involved in ${sp}^{3} d^{3}$ hybridisation in pentagonal bipyramidal geometry is: $s + p_{x} + p_{y} + p_{z} + d_{x y} + d_{x^{2} - y^{2}} + d_{z}$ .

Thus, the correct option is d.

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