00:01
Quantum numbers are used to describe the energy as well as the location of electrons in specific atoms, and the quantum numbers follow specific patterns for each energy level.
00:11
N indicates the overall energy level, and l indicates the sub -level.
00:16
Within the sub -level, each sub -level corresponds to a different orbital type.
00:22
So if, for example, we talk about the 2 -s orbital, the number in front is our energy level, and l corresponds to the magnetic quantum number zero.
00:38
So this is a valid description because my quantum number here can range, since it's two, it can range from minus 1 to 0.
00:50
And so that's a possible option.
00:55
If, however, we try to have a 2d, n equals 2, and the l number for d, we can see is 2.
01:07
It's not possible in the second energy level to have a two.
01:11
So this is not a possible orbital...