Question

Which energy level doesn’t have a p-orbital?

Answer 1

The arrangement of orbitals in a way of $s,p,d,f - orbitals$ , and the lowest energy level only contains s-orbital, and the highest energy level contains all the four orbitals. As we know, there are a total of four energy levels.

Complete answer:
First energy level of an electron doesn’t have a p-orbital. First energy level only contains s-orbital.
The first energy level contains only one s-orbital, the second energy level contains one s-orbital and three p orbitals, and the third energy level contains one s-orbital, three p orbitals, and five d orbitals.
Electrons in a hydrogen atom must be in one of the allowed energy levels. If an electron is at the first energy level, its energy must be precisely $- 13.6{\text{ }}eV$ . It must have $- 3.4{\text{ }}eV$ of energy if it is in the second energy level. In a hydrogen atom, an electron cannot have a value of $- 9eV, - 8eV$ , or any other value in between.
The 3-dimensional zone surrounding the nucleus where electrons are most likely to be is represented by an energy level. The nucleus is closest to the first energy level. The second energy level is slightly further distant than the first. The third is slightly further away from the second, and so on.
The energy levels, orbitals, and quantity of electrons are all described using electron configuration notation. The superscript number indicates how many electrons are in that orbital, and the number and letter indicate the energy level and orbital, respectively.

Note:
The energy of electrons at higher energy levels, which are further away from the nucleus, is greater. They also have more orbitals and a larger number of electrons available. Valence electrons are the electrons in an atom's outermost energy level.