Q.

Which of the following is correct for bond dissociation enthalpy in halogen molecule

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a

I2>Cl2>Br2>F2

b

F2>Cl2<Br2<I2

c

Cl2>Br2>F2>I2

d

F2>Cl2>Br2>I2

answer is C.

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Detailed Solution

F2                       Cl2                        Br2                      I2

158.8                   242.8                   192.8                 151.1

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Which of the following is correct for bond dissociation enthalpy in halogen molecule