Sagot :
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[tex]\sf\blue{{\: ANSWER :}}[/tex]
Hydrogen and Helium
- Hydrogen And Helium are the lightest elements in the periodic table. They exist as gases at room temperature and are the two most common elements in the universe, with hydrogen making up about 75% of all matter.
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Explanation:
#CarryOnLearning
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Just correct me if i'm wrong ^^