Question

Why 1p and 2d is not possible?

Answer 1

Answer:

the first shell, there is only the 1s orbital, as this shell can have a maximum of only 2 electrons. Therefore, the 1p orbital doesn't exist. In the second shell, both 2s and 2porbitals exist, as it can have a maximum of 8 electrons. ... Therefore, the 3f orbitals donot exist

Answer 2

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.