Valency is determined by the number of electrons gained, lost, or shared to achieve a full outer shell (usually eight electrons, known as the octet rule).
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Valency is determined by the number of electrons gained, lost, or shared to achieve a full outer shell (usually eight electrons, known as the octet rule).
The valency of an element is determined by the number of electrons in its outermost shell. It reflects the element’s ability to gain, lose, or share electrons to achieve a stable electron configuration.