HomeAnatomy & Physiology Exam PrepQuestion 9 of 10
Anatomy & Physiology Exam PrepQuestion 9 / 10

Calculate the maximum number of electrons that can occupy the third electron shell for sulfur, given its atomic number is 16. Element Atomic Number Sulfur 16

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✓ Correct answer: D. 18 The capacity of an electron shell is determined by $$2 \times n^2$$, where $$n$$ is the principal quantum number of the shell. For the third shell (n=3), the maximum number of electrons it can hold is $$2 \times 3^2 = 18$$. Sulfur does not use the full capacity of the third shell, but the question asks for the maximum potential number.

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