Assertion: Bond energy and bond dissociation energy have identical value for diatomic molecules. Reason: Greater the bond dissociation energy, less reactive is the bond.

Question

Assertion: Bond energy and bond dissociation energy have identical value for diatomic molecules. Reason: Greater the bond dissociation energy, less reactive is the bond. (A) If both assertion and reason are true and reason is the correct explanation of assertion (B) If both assertion and reason are true but reason is not the correct explanation of assertion (C) If assertion is true but reason is false (D) If both assertion and reason are false

Tardigrade Admin · Accepted Answer

Bond dissociation energy is the energy required to break a particular bond in one mole of a gaseous molecule. Bond energy is the average values of dissociation energies of the same type of bond present in the molecule.

Bond energy of

C - H

bond in methane is

99.2 k c a l / m o l .

Thus for polyatomic molecules, average bond energy is taken as the dissociation bond energy.

Q. Assertion : Bond energy and bond dissociation energy have identical value for diatomic molecules. Reason : Greater the bond dissociation energy, less reactive is the bond.

If both assertion and reason are true and reason is the correct explanation of assertion

If both assertion and reason are true but reason is not the correct explanation of assertion

If assertion is true but reason is false

If both assertion and reason are false

Q. Assertion : Bond energy and bond dissociation energy have identical value for diatomic molecules.
Reason : Greater the bond dissociation energy, less reactive is the bond.