The enegry of an electron in an atom//ion depends principally on

Options

A. `m_(s)`
B. `l`
C. `m_(l)`
D. `n`

Answer

D

Explanation

The smaller `n` is, the lower is the enegry. In the case of the `H` atom or single-electron atomic ions, such as `Li^(2+)` and `He^(+), n` is the only quantum number determining the enegry (which is given by Bohr's formula). For other atoms//ions, the enegry also depends on the quantum number `l`. since enegry is required in shifting away the negatively charged `e^(-)` from the positively charged nucleus, the enegry of the orbital will increase with increase of `n`.