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Give the bond dissociation order of halo...

Give the bond dissociation order of halogens.

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Bond dissociation order of halogens is, `Cl_(2)gtBr_(2)gtF_(2)gt I_(2)`.
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Knowledge Check

  • Match the correct bond dissociation in halogens {:("Halogens","Bond energy "),(F_(2),"158.8 Kj mol"^(-1)),(Cl_(2),"242.6KJmol"^(-1)),(Br_(2),"151.1KJmol"^(-1)),(I_(2),"192.8KJmol"^(-1)):}

    A
    `1-A,2-B,3-D,4-C`
    B
    `1-A,2-B,3-C,4-D`
    C
    `1-B,2-A,3-D,4-C`
    D
    `1-D,2-C,3-A,4-B`

  • The C-C bond dissociation energy is

    A
    103 K cals `"mole"^(-1)`
    B
    83 K cals `"mole"^(-1)`
    C
    8.3 K cals `"mole"^(-1)`
    D
    83 K cals `"mole"^(-1)`

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    Fluorine is very reactive because its bond dissociation energy is less. Why bond energy is less in F_2 ?

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