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Valency to Chemical Formula

WHAT IS THE N...

Question

WHAT IS THE NUMBER OF VALENCE ELECTRONS IN SODIUM ION?

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Solution

Na ion, Na⁺ contains 1 electron less than Na and has the electronic configuration 2,8

The outermost shell contains 8 electrons, so number of valence electrons =8

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What is the number of valence electrons in O2- ion and why?

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