3
3
All p sublevels contain three orbitals, including the 4p sublevel.
The 2p sublevel can hold a maximum of 6 electrons.
6 electrons in 3 orbitals of p-sublevel: px, py and pz
9
The 3rd period contains 2 of the 3 orbitals for the third sublevel. It has the s and p orbitals in it.
5 orbitals
In the principal energy level n = 3, there are s, p, and d orbitals. The s sublevel has 1 orbital, the p sublevel has 3 orbitals, and the d sublevel has 5 orbitals. These orbitals can hold up to a total of 18 electrons.
7 Orbitals
There are 9 orbitals in a g sublevel. (there is 1 in an s sublevel, 3 in a p sublevel, 5 in a d sublevel, 7 in an f sublevel, 9 in a g sublevel, 11 in an h sublevel, etc.)
The number of electrons found in each sublevel is given by the formula 2n^2, where n is the principal quantum number. For example, the s sublevel can hold a maximum of 2 electrons, the p sublevel can hold a maximum of 6 electrons, the d sublevel can hold a maximum of 10 electrons, and the f sublevel can hold a maximum of 14 electrons.
There are 1 orbital in the g sublevel. Each orbital can hold up to 2 electrons. Therefore, the g sublevel can hold a maximum of 2 electrons.