the valency of magnesium is
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2 +
Magnesium has valency equal to 2 + because the electronic configuration of Mg is [2,8,2]. The nearest noble gas to magnesium is neon with electronic configuration of [2,8], to achieve this stable electronic configuration Mg can lose 2 valence electrons, hence its valency is 2 + .
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the valency of magnesium is 2+
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