Help with these chemistry questions in the description please.

Question

These relate directly to the model of electron structure known as Quantum Mechanics. If anybody could answer the questions below it’d be great thanks.

State the maximum number if electrons that can occupy main energy level 9. State the number of sublevels that could be found on main energy level 9. State the number of orbitals that occupy main energy level 9. State the number of orbitals in the 3d sublevel.

Answer 1

The total number of electrons in a given energy level is 2(n²) wheren is the energy level. For example, the third energy level can have 2(3²) = 18 electrons. Thus maximum number of electrons that can be in level 9 = 162

The number of sublevels is the same as the number of the main/principal level. Example: if the main energy level is 3, there are 3 sublevels (s, p and d). Thus if main energy level is 9, there would be 9 sublevels.

For orbitals, the maximum number is n² so the first energy level has 1 sublevel; for second sublevel there are 4 sublevels (1 s and 3 p), etc. For the 9th energy level there can be a maximum of 81 sublevels.

In the 3d sublevel, the number of orbitals is the same as in any other d sublevel, and that would be 5 orbitals. Recall, s has 1, p has 3 and d has 5 orbitals.

Answer 2

Number of electrons in main energy level 9: 34.

The number of sub-levels in main energy level 9: 9.

The number of orbitals that occupy main energy level 9: 17.

The number of orbitals in 3d sub-level: 5.

Let me know if you need a more detailed explanation.