Biology, 16.03.2020 22:58 maxpaz782

An unidentified element has many of the same physical and chemical properties as neon and krypton but has a lower atomic mass than either of these elements. What is the most likely identity of this element?
F argon G fluorine H helium J oxygen

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An unidentified element has many of the same physical and chemical properties as neon and krypton but has a lower atomic mass than either of these elements. What is the most likely identity of this element? F argon G fluorine H helium J oxygen

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Another question on Biology

An unidentified element has many of the same physical and chemical properties as neon and krypton but has a lower atomic mass than either of these elements. What is the most likely identity of this element?
F argon G fluorine H helium J oxygen