16. Write the number of electrons present in a shell and mention the shell in F (Z=9).
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Explanation:
It depends on which shell you are talking about…
First shell contain 2 electrons
Second shell contains 8 electrons
Third shell contains 8 electrons
Fourth shell contains 18 electrons
Fifth shell contains 18 electrons
Sixth shell contains 32 electrons
Seventh shell contains 32 electrons
It may also be like 2, 8,18, 32 instead of the above rule… it's depends on the valency and which one has less free electrons
It's general formula is 2(n)^2
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