20. i am a noble gas with 2 electrons.
21. i am the 2nd most abundant element in the
earth...
Physics, 03.09.2019 05:10, gizmo50245
20. i am a noble gas with 2 electrons.
21. i am the 2nd most abundant element in the
earth's crust and have 14 neutrons.
Answers: 1
Chemistry, 12.08.2019 19:30, selenaK9514
Answers: 1
Chemistry, 12.08.2019 23:30, ghlin96
Answers: 3
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Answers: 1
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