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  • 21-09-2018
  • Chemistry
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what is berylliums energy levels

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viktoria1198zz viktoria1198zz
  • 24-09-2018

Beryllium is a chemical element with symbol Be and atomic number 4. It is a relatively rare element in the universe, usually occurring as a product of the spallation of larger atomic nuclei that have collided with cosmic rays.

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