The shape of $IF_6^-$ is

What is the formal charge on the sulphur atom in a sulphuric acid $(H_2SO_4)$ molecule?

Which of the following molecules can be represented as $AB_2E_2$,where $A$ is the central atom,$B$ represents bond pairs of electrons,and $E$ represents lone pairs of electrons?

How many of the following molecules have two lone pairs of electrons on the central atom?
$SF_6$,$BF_3$,$ClF_3$,$PCl_5$,$BrF_5$,$XeF_4$,$H_2O$,$SF_4$

The molecule which has a pyramidal shape is

Which one of the following species has a plane triangular shape?