Concentrated $HNO_3$ reacts with $I_2$ to give:

Number of $Cl=O$ bonds in chlorous acid,chloric acid and perchloric acid respectively are :

The products obtained when chlorine gas reacts with cold and dilute aqueous $NaOH$ are:

Manganese dioxide on heating with concentrated hydrochloric acid gives a greenish yellow gas,$X$. With excess of ammonia,$X$ gives $Y$ and $Z$. $Y$ and $Z$ respectively are:

Iodine dissolves readily in

For the reaction $Br_2 + F_2$ (excess) $\rightarrow P$, the molecular formula and structure of $P$, respectively, are