No hydrogen is the lightest element.
Helium with an atomic number of 2,is the lightest gas on the periodic table :)
Helium with an atomic number of 2,is the lightest gas on the Periodic Table :)
Hydrogen is the lightest element.
hydrogen is the lightest element
Hydrogen. It is the lightest element in the known universe.
No, hydrogen is ?the lightest element in the periodic table.
Lithium is the lightest metallic element. Its atomic weight is 6.491.
The lightest element with only one proton is hydrogen.
Hydrogen is not only the lightest element of all, it is also very reactive.
Hydrogen is the "lightest" element.
helium