wolfyrainECT
16.04.2021 •
Chemistry
Which elements have two electron shells?
Helium
Lithium
Done
B
Boron
Calcium
Oxygen
Lead
Nitrogen
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Solved
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Ответ:
Helium (He)
Lithium (Li)
Beryllium (Be)
Boron (B)
Explanation:
Ответ:
there is more air near sea level