NEET Chemistry Enthalpy Assertion Reason Question
Assertion (A): The enthalpy of atomization for a diatomic molecule is equivalent to its bond dissociation enthalpy. | Reason (R): The enthalpy change involves breaking one mole of bonds completely to obtain atoms in the gas phase.
Both (A) and (R) are true and (R) is the correct explanation of (A).
Both (A) and (R) are true but (R) is not the correct explanation of (A).
(A) is true but (R) is false.
(A) is false.
Correct Answer
Detailed Explanation
The NCERT context states that for diatomic molecules, the enthalpy of atomization is also the bond dissociation enthalpy, as it involves breaking the bond to obtain atoms in the gaseous phase.
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