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Standard XII
Chemistry
S Block Elements
How many vale...
Question
How many valence electrons does an atom of magnesium possess?
A
2
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B
4
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C
1
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D
8
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Solution
The correct option is
B
2
Magnesium has atomic number 12. Its electronic configuration is
2
,
8
,
2
. Thus, it has 2 valence electrons.
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