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Monosaccharide

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Question

Choose the incorrect option for bond strength.

2 p_{π} - 2 p_{π} > 2 p_{π} - 3 p_{π}

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2 p_{π} - 3 p_{π} > 2 p_{π} - 3 d_{π}

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2 s - 2 p > 1 s - 2 p

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2s - 2p > 3s - 3p

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Solution

The correct option is B $2 p_{π} - 3 p_{π} > 2 p_{π} - 3 d_{π}$
B)
In $2 p_{π} - 3 p_{π}$ less effective overlapping with respect to $2 p_{π} - 3 d_{π}$

Difference in principal quantum, less efficient the overlap. Hence A and C are correct.
D)
Greater the principal quantum number, less efficient the overlapping and hence lesser the bond energy.

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