If an electron has a spin quantum number of $+ \frac{1}{2}$ and a magnetic quantum number of $- 1$,it cannot be present in an

What is the maximum number of electrons that can be accommodated in an orbital with $l = 3$?

The correct order of energy for orbitals in a multi-electron atom is:

Two statements are given below:
Statement $I$: In $H$ atom, the energy of $2s$ and $2p$ orbitals is same.
Statement $II$: In $He$ atom, the energy of $2s$ and $2p$ orbitals is same.
The correct answer is:

For $d$ electrons,the azimuthal quantum number is

Identify the nodal plane present in the $p_y$ orbital.