what is the maximum number of electrons the n = 4 shell can contain?

what is the maximum number of electrons the n = 4 shell can contain?
Answer
Explanation:
Step1: Recall electron - shell formula
The formula to calculate the number of electrons in a shell with principal quantum number (n) is (2n^{2}).
Step2: Substitute (n = 4) into the formula
We substitute (n = 4) into (2n^{2}), so (2\times4^{2}=2\times16).
Step3: Calculate the result
(2\times16 = 32).
Answer:
32