In graphite,carbon atoms are joined together due to

What is the number of lone pairs of electrons on the iodine atom in the $IF$ molecule?

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 . . . .

In which of the following molecules are $\pi-$ electrons not delocalized?

Number of electrons in the valence orbit of nitrogen in an ammonia molecule are

How many bonds are present between carbon and oxygen in $CO_2$? Explain.