$$ \text { Observe the following structure, } $$

$$ \text { The formal charges on the atoms 1,2,3 respectively are } $$

The bond angles $b_1, b_2$ and $b_3$ in the given structure are respectively (in ${ }^{\circ}$ )

In which of the following sets of molecules, the centil atoms of molecules have same hybridisation?

The correct increasing order of number of lone pair of electrons on the central atom of $\mathrm{SnCl}_2, \mathrm{XeF}_2, \mathrm{CIF}_3$ and $\mathrm{SO}_3$ is