EXERCISE

Most favourable conditions for electrovalent bonding are

Hydrogen bonding is maximum in:

Element $\mathrm{X}$ is strongly electropositive and $\mathrm{Y}$ is strongly electronegative. Both are univalent. The compound formed would be

The number of electrons present in '$\mathrm{L}$' shell of neon is 

The total number of covalent bonds present in methane is 

The number of electrons present in the outermost shell of halogen is 

Number of lone electron pairs around the central atom in ${\mathrm{BrF}}_5$ is 

The number of electrons sulphur require to acquire octet structure is