How many electrons in an atom can have the n = 5, l = 2 designation?

We are being asked to determine the **maximum number of electrons in** an atom for each 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)****→ ****(l) has to be at least 1 less than n, **range of values from** 0 up to (n-1)**

▪ Each **ℓ value **corresponds to a **subshell**:

Quantum Numbers

Quantum Numbers