General Science • ChemistryEasy
What is the maximum number of electrons that can be accommodated in a shell with principal quantum number n = 3?
A. 2
B. 8
C. 18✓ Correct Answer
D. 32
💡 Solution & Explanation
The maximum electron capacity of any principal energy shell is determined by the formula 2n squared, yielding 18 electrons for the third shell where n equals 3. Shell capacities follow fixed quantum rules rather than arbitrary groupings.
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