Chemistry Practice Problems Quantum Numbers Practice Problems Solution: How many electrons are in n = 3, l = 2?

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Solution: How many electrons are in n = 3, l = 2?

Problem

How many electrons are in n = 3l = 2?

Solution

We´re asked to determine how many electrons are in a set of quantum numbers given. To solve this problem, let’s first define and determine the possible values of the four quantum numbers:


principal quantum number (n)  energy level in orbitals and its value could be any positive integer starting from 1 to infinity.

angular momentum quantum number () → (l) has to be at least 1 less than n, range of values from 0 up to (n-1)

 Each  value corresponds to a subshell:

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