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If enthalpy of atomization for B r 2 ( l ) is x k J / m o l and bond enthalpy for B r 2 is y k J / m o l , the relation between them

Options

  1. Ais x = y .
  2. Bdoes not exist.
  3. Cis x > y .
  4. Dis x < y .

Correct answer

C. is x > y .

Step-by-step solution

∆ H atomisation = ∆ H Vap + Bond   E nergy Hence x > y Enthalpy of atomization is enthalpy change involved when one mole of gaseous atom is formed from a substance in an elemental state (Elemental state of Bromine is Br 2 ( l ) ). While, bond energy is energy required to break one mole of bonds in gaseous state to form separated atoms.

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