Answer:-
A valence electron is an outer shell electron of an atom that can participate in forming chemical bonds with other atoms. These electrons are found in the outermost energy level and determine an element’s chemical properties and reactivity. For example, elements in the same group on the periodic table have the same number of valence electrons, which is why they behave similarly in reactions. In a chemical bond, atoms often share or transfer valence electrons to achieve a full outer shell, like in covalent or ionic bonding. Understanding valence electrons helps explain why atoms bond and how molecules form.
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