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Which two elements on the periodic table share the same period and are both gases? A. Hydrogen and Helium B. Fluorine and Bromine C. Lithium and Potassium D. Xenon and Argon
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Which two elements on the periodic table share the same period and are both gases?

A. Hydrogen and Helium

B. Fluorine and Bromine

C. Lithium and Potassium

D. Xenon and Argon

User Dean Le
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A
Hydrogen and Helium are the only elements in the periodic table that share the same period and are based
User Shahensha
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