The range of the levels is between 0 to n-1. 3 minus 1 equals to 2, so we have 0, 1, 2 as sub levels. They are the same number of sub-levels.
3
There are five sublevels in the fifth energy level: 5s, 5p, 5d, 5f, and 5g.
There are two energy sublevels in the second energy level - the s sublevel and the p sublevel. The s sublevel can hold a maximum of 2 electrons, while the p sublevel can hold a maximum of 6 electrons.
In the second principal energy level, there are two types of sublevels: the s sublevel and the p sublevel. The s sublevel can contain a maximum of 2 electrons, while the p sublevel can hold up to 6 electrons.
There are 2 sublevels in energy level 2: the s sublevel and the p sublevel.
3
2
There are five sublevels in the fifth energy level: 5s, 5p, 5d, 5f, and 5g.
There are two energy sublevels in the second energy level - the s sublevel and the p sublevel. The s sublevel can hold a maximum of 2 electrons, while the p sublevel can hold a maximum of 6 electrons.
By the first principle energy level I assume you are referring to the lowest atomic orbital or ta principal quantum number of 1. This orbital holds 1 pair of 2 electrons.
9
In the second principal energy level, there are two types of sublevels: the s sublevel and the p sublevel. The s sublevel can contain a maximum of 2 electrons, while the p sublevel can hold up to 6 electrons.
There are 2 sublevels in energy level 2: the s sublevel and the p sublevel.
There are one 3s orbital, three 3p orbitals, and five 3d sublevels.
4 (apex lol)
In the ground state, a sodium atom in the second principal energy level has two sublevels completely occupied: the 2s and the 2p sublevels. The 2s sublevel can hold a maximum of 2 electrons, and the 2p sublevel can hold a maximum of 6 electrons.
2