The valency of oxygen is 2. According to the theory, the valency depends upon the no.of electrons in the outermost shell. Then why the valency of oxygen is 2 instead of 6?
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Every element tries to form octate ion. We need 8 electrons in the outer most shell. For oxygen it hae 6 electrons in outermost shell. so it is easy to take two electrons, than giving 6. so oxygen valency is 2
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The valency of oxygen is 2, because it needs two atoms of hydrogen to form water. ... 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^+ .
Explanation:
Hence verified
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