Question

State True or False.

For hydrogen atom, the energies of the sub-shells $4s,4p,4d$ and $4f$ are in the order: $4f>4d>4p>4s$.

• A. True
• B. False

Answer 1

The correct option is A True

The given statement is true.
For hydrogen atom, the energies of the sub-shells $4s,4p,4d$ and $4f$ are in the order: $4f>4d>4p>4s$. This is the same order in which the value of the azimuthal quantum number, l, increases.
With an increase in the value of the azimuthal quantum number, l, the energy of the subshell increases.