Hace 18 mil millones de años, el Ylem (A) estalló, expandiéndose y formándose las moléculas de hidrógeno y helio (B), que dieron origen después a las estrellas y galaxias, que siguen, a su vez, alejándose una de otras (C).

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Hello thereone of the following properties was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version. which property fits this description? answer: atomic mass  was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version.

Ithink a i think i tried i hope that : )