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Arrangement of Electrons around the Nucleus

For an atom ‘...

Question

For an atom ‘X’, K and L shells are completely filled. How many electrons will be present in it?

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Solution

Maximum number of electrons in K shell is 2

Maximum number of electrons in L shell is 8

If these shells are completely filled, then

Total number of electron = Number of electron in K shell + Number of electron in L shell

Total number of electrons = 2 + 8 = 10
The atom is Neon which shells have completely filled.

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Arrangement of Electrons around the Nucleus

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