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

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Meetu1912
Meetu1912 Meetu1912
  • 21-09-2018
Beryllium Atomic number 4 so
Atomic number = Proton number
so P = 4
Electron = Proton Number
so E = 4
Neutron = Atomic mass - Atomic number
= 9 - 4
= 5
Note : Atomic mass find from Periodic table
Energy Level = 2 because of 2 orbitals
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