Bond dissociation energy of F(2) is less...

Bond dissociation energy of `F_(2)` is less that of `Cl_(2)` give reason.

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Atomic size of `F` atom is less than `Cl` ,hence bond length `F-F` is less than `Cl-Cl`. Thus the `lp-lp` repulsion in `F-F` molecule is much larger than `Cl-Cl` molecules . Hence `F-F` bond is weaker than `Cl-Cl` bond dissociation energy of `F_(2)` is less than that of `Cl_(2)`.

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Assertion: Bond dissociation energy of F_(2) molecule is less than that of Cl_(2) molecule. Reason: Due to inter-electronic repulsion between F atom, F-F bond length in F_(2) molecule is higher than Cl-Cl bond lengthh in Cl_(2) molecule.

If both (A) and (R) are true and (R) is the correct explanation of (A)

if both (A) and (R) are true but (R) is not correct explanation of (A)

If (A) is true but (R) is false

If (A) is false but (R) is false

Statement-1 : Bond dissociation energy of F_(2) is more than Cl_(2) . Statement-2 : Due to smaller size of fluorine there are greater electron repulsions between the F atoms than Cl atoms.

Statement-1 is True, Statement-2 is True, Statement-2 is a correct explanation for Statement-1

Statement-1 is True, Statement-2 is True, Statement-2 is NOT a correct explanation for Statement-1

Statement-1 is True, Statement-2 is False

Statement-1 is False, Statement-2 is True

The bond dissociation energy "off"_(2) is very low due to

low density

repulsions between non bonding electrons

its low atomic number

atractions between non bonding electrons