Question

magnesium has 12 protons and 12 neutrons . find the valency

Answer 1

valency of magnesium is 2

magnesium electronic configuration

= 2 ,8,2

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Answer 2

aromic number of magnesium is 12 hence its electronic configuration is 2,8,2. valency is to gain or lose electron to attain the nearest noble gas configuration ... and since the magnesium has 2 electrons in its outermost shell therefore valency of magnesium is 2..

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