What is the shape of the $SF_3Cl_3$ molecule?

In $HCHO$,the carbon atom has which hybridization?

In $C_{60}$,all carbon atoms are:

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?

The hybridisation of $N$ in $NO_2^{+}$,$NO_3^{-}$ and $NH_4^{+}$ respectively is

In the process $XH_3 + H^{+} \to XH_4^+ (X = N, P, As, Sb)$,the maximum increase in bond angle occurs in the case of: