Chemistrymedium · Past Paper
How many shells are used in the electronic configuration of Calcium?
A2
B3
C4
D5
✓ Correct Answer: C — 4
Calcium (At. No. 20) has the configuration 2, 8, 8, 2, which occupies 4 shells (K, L, M, N).
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✓ Correct Answer: C — 4
Calcium (At. No. 20) has the configuration 2, 8, 8, 2, which occupies 4 shells (K, L, M, N).
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