High+on+Helium

//** __HIGH ON HELIUM__ __TOP FACTS

1. Helium was first discovered during a solar eclipse in 1868 when a mysterious yellow spectral line was observed by French Astronomer Pierre Jannssen.

2. Helium is a colorless, odorless, tasteless, non-toxic, inert monatomic chemical element that heads the noble gas group in the periodic table __**//

__//The Properties of the Element Helium//__
__//**Name of Element : Helium Symbol of Element : He Atomic Number of Helium : 2 Atomic Mass: 4.002602 amu Melting Point: -272.0 °C - 1.15 °K Boiling Point: -268.6 °C - 4.549994 °K Number of Protons/Electrons in Helium : 2 Number of Neutrons in Helium : 2 Crystal Structure: Hexagonal Density @ 293 K: 0.1785 g/cm3 Color of Helium : colorless**//__

__//**Occurrence of the element Helium in the Atmosphere**//__ __//**Helium exists only as a monatomic gas**//__