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Mariulka [41]
3 years ago
7

Helium is considered a noble gas because it has a _blank___ valence electron shell

Physics
2 answers:
zubka84 [21]3 years ago
5 0
<span>Noble gases are elements found in the last column of the periodic table and are characterized by their reaction rate, or lack there of. Each element in that column does not react since they do not need to gain or lose electrons. So, helium has a "full" valence electron shell.</span>
3241004551 [841]3 years ago
3 0
Helium has completely filled valence orbitals similar to noble gases and <span>is chemically inert at room temperature.</span>
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