Shib Sagar posted an Question
September 21, 2020 • 21:28 pm 30 points
  • IIT JAM
  • Chemistry (CY)

Please solve this problem

(a) 1 and3 (b)Z and4 Correct order of bond strength of X-F in

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    Priyanshu kumar Best Answer

    option C is correct

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    Due to back bonding case in BF3 it acquires double bond character...So in all these it has maximum bond strength

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    The F-F bond length is so short that the lone pairs of electrons on the fluorine atoms repel each other and weakens the F-F bond.

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    Thus the bond strength order will be 5<4<3<2<1

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    The only option C satisfies this...so option C is correct

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