Maximum number of electrons in a sub-shell of an atom is determined by the following.

Options

A. `2l + 1`
B. `4l +2`
C. `2n^(2)`
D. `2l +2`

Answer

B

Explanation

Each subshell of qauntum number `l` contains `2l+ 1` orbitals. According to Pauli's exclusion principle, no more than two electrons can be placed in each orbital. Therefore, the maximum number of electrons is simply twice the number of orbitals that are employed, i.e., `2(2l +1) = 4l +2.`