There is no difference between a $2p$ and $3p$ orbital regarding ?

Write the values of $n, l, m_{l}, m_{s}$ for $4f$.

The quantum numbers $n$ and $l$ for four electrons are given as: $(1) \, n = 4, l = 1; \, (2) \, n = 4, l = 0; \, (3) \, n = 3, l = 2; \, (4) \, n = 3, l = 1$. Arrange them in increasing order of their energy.

The rule which states that an electron enters the sub-shell for which the $(n + l)$ value is minimum is known as:

An electron has a spin quantum number $+1/2$ and magnetic quantum number $-1.$ It cannot be present in :

The quantum numbers $+1/2$ and $-1/2$ for the electron spin represent