valency of magnesium is 2, why?
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Since magnesium has 2 electrons in it's outermost shell, hence it's valency is 2 I.e. it will lose it's 2 electrons to achieve noble gas configuration (2,8).
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1
Answer:
we know that the atomic number of my is 12.
according to electronic configuration, we can arrange
1st shell=2
2nd shell=8
3rd shell=2
we know that the valency is the number of electrons in the outer most shell. here mg has 2 in its putter most shell.
therefore the valence of mg is 2
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