Fluorine reacts with dilute $NaOH$ to form a gaseous product $A$. The bond angle in the molecule of $A$ is

Given below are two statements:
Statement $I$: $SbCl_5$ is more covalent than $SbCl_3$.
Statement $II$: The higher oxides of halogens tend to be more stable than the lower ones.
In the light of the above statements,choose the most appropriate answer from the options given below:

Among halogens,the one which can oxidise water to oxygen is:

With respect to hypochlorite,chlorate,and perchlorate ions,choose the correct statement$(s)$.
$A.$ The hypochlorite ion is the strongest conjugate base.
$B.$ The molecular shape of only the chlorate ion is influenced by the lone pair of electrons on $Cl$.
$C.$ The hypochlorite and chlorate ions disproportionate to give rise to an identical set of ions.
$D.$ The hypochlorite ion oxidizes the sulfite ion.

Which of the following has the greatest reducing power?

In halogens,with the increase of atomic number,which trend is observed?