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Valence Electrons of Elements

10. Periodic Properties of the Elements / Valence Electrons of Elements / Problem 5

Determine the number of core, valence, and unpaired electrons for aluminum.

A

10 core electrons, 3 valence electrons, 1 unpaired electron

B

10 core electrons, 5 valence electrons, 5 unpaired electron

C

13 core electrons, 10 valence electrons, 3 unpaired electrons

D

2 core electrons, 11 valence electrons, 5 unpaired electrons

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