NEET-XII-Chemistry

exam-1 year:2016

with Solutions - page 2
  • #66
    Which one of the following orders is correct for the
    bond dissociation enthalpy of halogen molecules?
    (1) ``\ce {I2 > Br2 > Cl2 > F2}``
    (2) ``\ce {Cl2 > Br2 > F2 > I2}``
    (3) ``\ce Br2 > I2 > F2 > Cl2}``
    (4)``\ce { F2 > Cl2 > Br2 > I2}``
    digAnsr:   2
    Ans : (2)
    Sol. C2 > Br2 > F2 > I2

    due to high p-p repulsion