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Q.
Which of the following orbitals will not form sigma bond after overlapping?
Chemical Bonding and Molecular Structure
Solution:
$S$ and $P _{z}$ orbitals are along the axis, they able to form the sigma bond while $P _{x}$ and $P _{y}$ orbitals are lateral, so they can form only $Pi$ bond.
Examples of $p -$ p overlapping:- $Cl _{2}, Br _{2}, I _{2}$,