Covalent compounds are generally ...... in water.

Which is true for $SF_6$?

Which of the following forces holds the carbon atoms together in diamond?

Among $B_2H_6, B_3N_3H_6, N_2O, N_2O_4, H_2S_2O_3$ and $H_2S_2O_8$,the total number of molecules containing a covalent bond between two atoms of the same kind is . . . .

Bond dissociation energies of $HF, HCl, HBr$ follow the order:

Identify the Lewis acid from the following.