tpt-hugger
tpt-hugger
2 / 0
3rd Dec 2016
2nd Apr 2017
No Description provided.

Comments

  • tpt-hugger
    tpt-hugger
    5th Jun 2017
    No, helium has 2 protons and 2 neutrons, which is the most common isotope, while there are few more isotopes like Helium-3.
  • LetsGoToSpace
    LetsGoToSpace
    2nd Apr 2017
    Isnt that the helium atom?