Valency can be compared to the arms or hands of an atom. Just as a person with two arms can hold hands with two others, an atom with a valency of two can form bonds with two other atoms.
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Valency is like a dance partner’s willingness to hold hands. Elements seek stability by gaining, losing, or sharing electrons, akin to dancers adjusting their grip. Just as dancers adjust their hold to maintain balance, elements adjust their valency to form stable compounds.