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in Chemistry by (29.8k points)

Considering x-axis as the internuclear axis which out of the following will not form a sigma bond and why? 

(a) 1s and 1s 

(b) 1s and 2px 

(c) 2py and 2py 

(d) 1s and 2s. 

1 Answer

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2py and 2py orbitals will not a form a sigma bond. Taking x-axis as the internuclear axis  , 2py and 2py orbitals will undergo lateral overlapping, thereby forming a pi (π) bond. 

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