ACMS1FAN ACMS1FAN

03-09-2019
Physics

contestada

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.

Respuesta :

vegangamer102 vegangamer102

03-09-2019

Answer:

20.helium

21.silicon

hope this helps :)

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