The overlap(s) that give(s) rise to bond formation among the following is/are:

p_{x}

and

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

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p_{x}

and

d_{z^{2}}

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p_{y}

and

d_{z^{2}}

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All of the above

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Solution

The correct option is A $p_{x}$ and $d_{x^{2} - y^{2}}$
In case of overlapping of orbitals, they must have similar orientation.
$p_{x}$ and $d_{x^{2} - y^{2}}$ have similar orientations along the x-axis and hence, they can overlap and lead to bond formation.

The other pairs, $p_{x}$ - $d_{z^{2}}$ and $p_{y}$ - $d_{z^{2}}$ , have orbitals that are right angled to each other and hence, orbital overlap is not possible.

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