Thursday 16 May 2013

1.38 describe the formation of a covalent bond by the sharing of a pair of electrons between two atoms

Covalent bonds

When two non-metallic elements combine together they often share  electrons between them. When an atom of hydrogen, H and an atom of chlorine, Cl, combine to form hydrogen chloride, HCl, the atoms come close enough together for their outer electron (valence) shells to overlap.

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