sashaa1516 sashaa1516
  • 11-11-2020
  • Chemistry
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An atom of an element has 2 electrons in the 1st energy level and 5 on the 2nd energy level what element is it ?

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litonc20
litonc20 litonc20
  • 11-11-2020

the element is nitrogen

5+2=7

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