Q.

Which of the following overlap is the strongest?

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a

2p – 2p

b

3p – 3p

c

5p – 5p

d

π(5p–5p)

answer is A.

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Detailed Solution

σ bond is stronger than π bond.In the given options 1, 2, 3 are σ-bonds.As the size of p-orbitals increases, extent of overlapping decreases, and hence strength of the bond decreases.From the above conclusions,Extent of overlapping (or) [ Strength of overlapping]: 2p-2p > 3p-3p > 5p-5p > π[5p-5p]
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