Chemistry, 16.11.2019 21:31 erikamaldonado661
In the symbol (4/2)he, the superscript 4 is the for helium, and the subscript 2 is the for helium.
Answers: 3
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In the symbol (4/2)he, the superscript 4 is the for helium, and the subscript 2 is the for helium....
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