Question

Why 2d orbital is not possible?

Answer 1

Answer:

The short answer to this question is that the principal quantum number n must be larger than the angular momentum quantum number l. Thus, for n = 1, only l = 0 gives a valid wave function, for n = 2, you can only have l = 0, 1 (s and p), and so on. This condition follows from the requirement that the wave function needs to be square integrable.

Answer 2

Answer:

In the 1st shell, there is only 1s orbital, as this shell can have a maximum of only 2 electrons. Therefore 1s doesn't exist.

In 2nd shell, both 2s and 2p orbitals exist, as it can have a maximum of 8 electrons.

In 3rd shell, only the 3s, 3p and 3d orbitals exist, as it can hold maximum of 18 electrons. Therefore, 3f doesn't exist....

Explanation:

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