(a) Explain the following :
(i) is an exothermic compound whereas is not.
(ii) is most reactive of all the four common halogens.
(b) Complete the following chemical equations :
(i) F is more electronegative than Cl.
The difference in the electronegativity between N and F is much more than the difference between electronegativity of N and Cl. So there is need of much more energy to break the N-F bond.
(ii) Because of the low bond dissociation energy readily dissociates into atoms and reacts with other substances readily.