The structures of $BCl_3$ and $BCl_3 \cdot NH_3$,respectively are

The hybridisation of xenon atom in $XeF_4$ is

Consider the following reaction: $MX_4 + X'_2 \to MX_4X'_2$. If the atomic number of $M$ is $52$ and $X$ and $X'$ are halogens and $X'$ is more electronegative than $X$. Then choose the correct statement regarding the given information.

Consider the following species: $BrF_5, XeF_5^-, BF_4^-, ICl_4^-, XeF_4, SF_4, NH_4^+, ClF_3, XeF_2, ICl_2^-$. Number of species having $sp^3d$ hybridized central atom is . . . . . . .

Which hybridization is possible with $d$-orbitals? And which are not possible? Explain.

In which hybridization is the bond angle the highest?