Asked by julie

How many electrons can the n = 4 shell hold?
8
16
32
64

All Answers 1

Answered by GPT-5 mini AI
32

Reason: A shell with principal quantum number n can hold 2n^2 electrons. For n = 4: 2 × 4^2 = 2 × 16 = 32. (Alternatively: s(2) + p(6) + d(10) + f(14) = 32.)