Question

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

Answer 1

According to Bohr-Bury scheme, the maximum number of electrons present in a shell is given by the formula $2n^2$, where ‘n’ is the orbit number.

Therefore, the maximum number of electrons in:
K-shell = 2
L-shell = 8
[1 Mark]

If K and L shells of an atom are full, then the total number of electrons in the atom would be = 2 + 8 = 10 electrons.
[1 Mark]