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Which of the following statements is true?

1. Silicon exhibits 4 coordination number in its compound
2. Bond energy of F2 is less than Cl2
3. Mn(III) oxidation state is more stable than Mn(II) in aqueous state
4. Elements of 15th group shows only +3 and +5 oxidation states

Correct answer: Bond energy of F2 is less than Cl2

Solution

The bond energy of F2 is less than Cl2 due to strong inter-electronic repulsion in the small F2 molecule, which weakens the bond.

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