give correct Answer....
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Answered by
1
Answer:
the second is the correct answer
2,8,2
as it has atomic number 12
Answered by
11
Answer:
8+2+2 is correct answer
Explanation:
Atomic number and the number of electrons in magnesium atom is 12. So, electronic configuration is 2, 8, 2 (because 12 = 2 + 8 + 2).
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