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Valency, or valence, refers to the ability of an atom to bond with other atoms, which is determined by the number of electrons in its outer shell. It indicates how many electrons an atom can lose, gain, or share during chemical reactions. For example, carbon has a valency of four, allowing it to form four covalent bonds with other atoms. This property is crucial in understanding the formation of molecules and the behavior of elements in chemical reactions.

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3w ago

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