Question

electron gain enthalpy order and bond dissociation enthalpy of halogens?order?​

Answer 1

Electron gain enthalpy: since 17th group elements have stable electronic configuration. no tendency to accept the electron. as we move from Cl to I , the electron gain enthalpy becomes less and less negative die to corresponding increase in their size.

Bond dissociation enthalpy:Cl2>Br2>F2>I2

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