How many electrons are in the outer shell of a neutral atom of magnesium (Mg)?
Answer and explanation
Correct answer: B. 2
- Step 1: The number of outer electrons follows from the group of the element in the periodic table. Answer: 2. Why not the others: 6: That is not the number of outer electrons for magnesium. 1: That is not the number of outer electrons for magnesium. 8: That is not the number of outer electrons for magnesium.
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