SolutionsSharing Electrons

In an ionic bond, one atom gives up electrons to another and ions are formed that attract each other. In a covalent bond, the atoms share pairs of electrons, which lie between the two nuclei; there is no net transfer of electrons and the atoms remain neutral.

1. Nonpolar: the two atoms are identical and share the electrons equally.
2. Polar: chlorine is more electronegative and pulls the electron pair towards itself (H^δ+–Cl^δ−).
3. Nonpolar.