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n indicates the relative size of the orbital (the distance from the nucleus of the peak in the radial probability distribution plot).
n specifies the energy level of the H atom: the higher the n value, the greater the energy.
l is related to the shape of the orbital.
For orbitals with n = 2, l can have a value of 0 or 1; with n = 3, l can be 0, 1, or 2; etc.
The number of possible l values equals the value of n.
Concept 7-11. The distinction between level (shell), sublevel (subshell), and orbital
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