The six noble gases that occur naturally are helium (He), neon (Ne), argon (Ar), .... An atomic shell diagram with neon core, 2 electrons in the inner shell and 8.
HYDROGEN - I am not really an alkali metal, but since I have only 1 electron I
behave like them. 4. NICKEL - I ... HELIUM -
Helium... that's what i found in chemicalelements.com ... but on my science homework (Crossword) it doesnt fit because of the L in Chlorine.
Periodic Table Puzzle Name. 1 2 3 4 .5 _. 6 7 8. 9. 10 11 12. 13. 14 15 ... I have
20 neutrons and am found in your teeth 20,
Sep 21, 2015
The first element of this group is Helium that contains only
Periodic Table or Periodic Chart of Elements showing