The strength of bonds formed by 2s-2s,2p-2p a | vedclass

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(C) The strength of a covalent bond depends on the extent of overlapping of atomic orbitals. Greater the extent of overlapping,stronger is the bond. F

Vedclass · Accepted Answer

$p-p > p-s > s-s$

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(C) The strength of a covalent bond depends on the extent of overlapping of atomic orbitals. Greater the extent of overlapping,stronger is the bond. For orbitals with the same principal quantum number $(n=2)$,the directional nature of the orbitals determines the extent of overlap. The $p-p$ overlap (coaxial) is more effective than $p-s$ overlap,which in turn is more effective than $s-s$ overlap due to the directional character of $p$ orbitals. Therefore,the order of bond strength is $p-p > p-s > s-s$.

The strength of bonds formed by $2s-2s$,$2p-2p$ and $2p-2s$ overlap has the order

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