The bond dissociation energy is highest for

Which pair of halogens does not undergo a disproportionation reaction with water?

Which of the following oxoacids of chlorine is the least oxidizing in nature?

Which of the following oxidation states are exhibited by iodine?

When a brown compound of manganese $(A)$ is treated with $HCl$,it gives a gas $(B)$. The gas,when taken in excess,reacts with $NH_{3}$ to give an explosive compound $(C)$. Identify compounds $A$,$B$,and $C$.

Photographic films or plates have ......... as an essential ingredient.