cakebpope
cakebpope
14-02-2018
Physics
contestada
Whitch family has full valence energy level
Respuesta :
CometZ
CometZ
14-02-2018
Group 0 - they are called the NOBLE GASES
(as they're very unreactive) because...
ALL of their atoms are full.
Example : Helium contains 2 electrons so it's outer shell is full
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