Helium

Symbol : He Atomic # : 2 Atomic Mass: 4 Melting Point: 0.95 o C  Boiling Point: 4.22 o C   Normal Phase: Gas   Cost = $ 37.50 for 100ft3   Classification: Nonmetal   My element belongs to the: Noble Gas family   Origin of Name: Greek sun god Helios   Discovered by Pierre - Jules - Cesar Janssen   Interesting Facts:   !. Supersonic wind tunnel  2. Cooling mediums for reactors  3. Protective gas in growing silicon & Germanium and producing titanium & Zirconium  4. Used in welding  5. Used for balloons  6. Used in MRI's   []    By : Jake Britton
 * 1) of Protons : 2
 * 2) of Neutrons: 2
 * 3) of Electrons: 4