Answers

2014-10-04T11:26:58+08:00
Is an electron that associated with an atom,and that can be participate in the formation of a chemical bond in a single covalent bond both atoms inĀ  the bond contribute one valence electron in order to form a shaded pair
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2014-10-04T11:28:45+08:00
Valence electron is an electron in an outer shell of an atom that can be lost to or shared with another atom to form a molecule.
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