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15 July, 10:07

What is the total number of electrons in the valence shell of an atom of aluminum in the ground state?

(1) 8 (3) 3

(2) 2 (4) 10

+3
Answers (1)
  1. 15 July, 10:27
    0
    The answer is (3) 3. The outer shell of an atom is called valence shell. And the ground state is the lowest energy state of an atom. Aluminum has a electron distribution of 2, 8, 3. So the outer shell has 3 electrons.
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