MHT CET Chemistry question

The F - F bond is weak because

(A)The repulsion between the nonbonding pairs of electrons of two fluorine atoms is largeCorrect
(B)The ionization energy of the fluorine atom is very low
(C)The length of the F - F bond is much larger than the bond lengths in other halogen molecules
(D)The F - F bond distance is small and hence the internuclear repulsion between the two F atoms is very low

Answer: (A)

Solution

The F-F bond is short, so the lone pairs on the two small F atoms repel strongly, weakening the bond; fluorine's ionisation energy is high (not

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Question ID VK-071287