Heluim

Learn about me

Helium

I am leader of the noble gases. I have a density of 0.1785 g/L. I can make your voice screech. I am in period 1 and group 18. I am colorless, orderless, tasteless nontoxic. My isotps are He4 and He3. My symbol is (He) my atomic number is 2, my atomic mass is 4, I have two protons I melt at 272° and boil at 268.6°c I'm a nonmetal. I was discoverd by sir wiliam bamsey in the year of 1895