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Explain why Bond dissociation energy of ...

Explain why Bond dissociation energy of `F_2` is less than that of `Cl_2` ?

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Fluorine atom being smaller in size, the inter-electronic repulsions between the non-bonding electrons present in the 2p-orbitals of fluorine atoms are much larger than similar interelectronic repulsions between the non-bonding electrons present in the relatively larger 3p-orbitals of chlorine atoms.
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Bond dissociation energy of F_2 is less than Cl_2 .

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Knowledge Check

  • 3 less than -2=

    A
    `-5`
    B
    `-6`
    C
    `5`
    D
    6

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