State the electronic configuration for Neon [p=10, n=10].

2, 6

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2, 7

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2, 9

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2, 8

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Solution

The correct option is D 2, 8
As we know, atomic no. is the total no of proton present in nucleus of an atom and atomic mass no is the total no of proton and neutron.
So neon have atomic no. 10 and mass no. 10+10=20. K shell will contain 2 electrons and L shell will contain 8 electrons.

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