. The orbital overlapping is maximum in

A: Cl2


C: HCl

D: HBr

Best Answer


  • To explain these we have to remember that P orbital has more directional nature and as orbital has non directional nature. So the P orbital has more effective overlap then that of the S orbital.
  • In the case of Cl2 there is an overlap between two P orbital, therefore the overlap is more effective and maximum overlap.

two P orbital


  • But in case of Hl, HCl, HBr the overlap between the S orbital of hydrogen and P orbital of halogen . So overlap is not that effective and minimum overlap.

hydrogen and P orbita

Correct Optionis: (A) Cl2

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