Question

why orbitals like 3f and 2d doesn't exist ?​

Answer 1

Answer:

Each energy level listed does not contain the given sublevels in the ground state.

Explanation:

In the ground state for each energy level:

In the 2nd energy level, electrons are located only in the s and p sublevels, so there are no d orbitals.

In the 1st energy level, electrons occupy only in the s sublevel, so there is no d sublevel.

In the 3rd energy level, electrons occupy only the s, p, and d sublevels, so there is no f sublevel.