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Trick to find sign (+,-) of valency of element
Mono | Di |Tri and Tetravalent Elements| Variable and multiple Valency.
what is the meaning of tetravalent
Valence electron/ Valency/ Monovalent/ Divalent/ Trivalent/ Tetravalent/ Variable Valency/ Examples
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Valency of an element
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PART 2 #shorts ||# trivalent ,#tetravalent and #pentavalent