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Helium (He), oxygen (O), carbon (C), and selenium (Se) are all nonmetal. Using the periodic table, which pair of these nonmetal has the most similar properties

Helium (He), oxygen (O), carbon (C), and selenium (Se) are all nonmetal. Using the periodic table, which pair of these nonmetal has the most similar properties
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Helium (He), oxygen (O), carbon (C), and selenium (Se) are all nonmetal. Using the periodic table, which pair of these nonmetal has the most similar properties

User Lii
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2 Answers

5 votes
Oxygen and Selenium because they are in the same group/family so they have the most similar properties.
User Watch
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4 votes
oxygen and selenium helium and selenium oxygen and helium carbon and oxygen
User IanRoberts
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