$AB_{3}$ is an interhalogen $T$-shaped molecule. The number of lone pairs of electrons on $A$ is $......$.

Which of the following molecules has one lone pair of electrons on the central atom?

Which of the following is $NOT$ tetrahedral in shape?

The molecule/ion with square pyramidal shape is:

Which of the following compounds does not have a linear structure?

Assertion : All $F-S-F$ angles in $SF_4$ are greater than $90^\circ$ but less than $180^\circ$.
Reason : The lone pair-bond pair repulsion is weaker than bond pair-bond pair repulsion.