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CBSE Class 9 Science Question 29 of 34

Structure of the Atom — Question 2

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Question

Question 2

If K and L shells of an atom are full, then what would be the total number of electrons in the atom?

Answer

K shell can hold 2 electrons and L shell can hold 8 electrons according to 2n2 rule . When both the shells are full, the total number of electrons present in the atom = 2 + 8 = 10 electrons.