hot air ballon
Nathan
Helium is a colourless, odourless gas. It belongs to group 18 and is chemically inert.
Helium has 2 protons, 2 neutrons and 2 electrons. The symbol for helium is He and the atomic number is 2.
helium is noble gas has atomic number is 2. it don't react with any other element because outer most shell is complete.
The element that fits this description is helium. Helium is a noble gas with a full outer shell of 2 electrons, making it stable and nonreactive under normal conditions.
Helium is a noble gas, it is colourless, odourless gas at STP. It is a chemically inert element.
unknown Helium.....the most uplifting experience a balloon can get.
Helium is an inert gas. It has 2 electons.it is non reactive.
The planet Saturn does not have a solid surface. Saturn is almost entirely made up of gases, hydrogen and helium.
A star is mostly composed of hydrogen and some helium. The fusion of hydrogen into helium is what produces the energy and light that stars emit.
Helium is chemically inert and does not form any compounds
An alpha particle is the same as a helium nucleus. It contains 2 neutrons and 2 protons. It has no electrons, so it is not an atom.