Identify the molecule in which the central atom undergoes $sp^3$ hybridisation.

What type of hybridization is present in the $PCl_{5}$ molecule?

Identify the hybridisation and geometry of $SF_4$ molecule respectively.

Which of the following molecules is linear?

As the $p-$character increases,the bond angle in hybrid orbitals formed by $s$ and $p$ atomic orbitals

When $BCl_3$ is treated with water,it hydrolyses and forms $[B(OH)_4]^-$ only,whereas $AlCl_3$ in acidified aqueous solution forms $[Al(H_2O)_6]^{3+}$ ion. Explain what are the hybridizations of boron and aluminum in these species?