Chemistry, 06.04.2021 18:00, lexizamora2

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...