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Magnesium (Mg) has nine electrons. Which of the following shows the correct electron configuration for an atom of Mg? 2, 2, 5 7, 2 1, 8 2, 7 brailyist please help me
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Magnesium (Mg) has nine electrons. Which of the following shows the correct electron configuration for an atom of Mg?

2, 2, 5
7, 2
1, 8
2, 7

brailyist please help me

User Sanvir Manilal
by
6.0k points

1 Answer

4 votes

Answer:

2,7

Step-by-step explanation:

Two in the first shell and 7 in the outer and last shell.

HOPE THIS HELPED

User Tristan Juricek
by
6.9k points
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