In the following question, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion:The stability of HF, HCl, HBr and HI decreases down the group.
Reason:Bond dissociation enthalpy increases in the order:H-F<H-Cl<H-Br<H-I
Both assertion and reason are true and reason is the correct explanation of assertion.
Both assertion and reason are true but reason is not the correct explanation of assertion.
Assertion is true but reason is false.
Both assertion and reason is false.
The stability of these halides HF, HCl, HBr and HI decreases down the group due to decrease in bond (H-X) dissociation enthalpy which means the requirement of energy to dissociate one single chemical bond which is in the order of: H-F> H-Cl> H-Br> H-I.