cryztal03
cryztal03 cryztal03
  • 15-12-2020
  • Chemistry
contestada

which element has 4 energy levels and 7 valence electrons

Respuesta :

kellychea
kellychea kellychea
  • 15-12-2020

Answer:

Beryllium 4 2

Boron 5 3

Carbon 6 4

Nitrogen 7 5

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