`A1`though the energy of an orbital is principally determined by the `n` quantum number, the energy also depends some what on the `l` quantum number except for_______atom//ion.
(i) `H` (ii) `Li^(+)`
(iii) `He^(+)` (iv) `Be^(2+)`

Options

A. `(i),(ii),(iii)`
B. `(i),(iii),(iv)`
C. `(i),(ii)`
D. `(i),(ii),(iii),(iv)`

Answer

C

Explanation

In a hydrogen atom or hydrogen-like particles, the value of `n` specifies the enegry of an orbital. This is not the case for a many-electron atom//ion. For a given`n`, the enegry of an orbital increases with `l`.