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Facts about Facts
about Helium:
Classification of the Element Helium
Helium is classified as an element in the 'Noble Gases' section
which can be located in group 18 of the Periodic Table.
Brief Facts about the
Discovery and History of the Element Helium
Helium was first detected during a solar eclipse in 1868 as a
bright yellow line in the spectrum of the chromosphere of the Sun,
by French astronomer Pierre Janssen . It was discovered by Sir
William Ramsey in 1895. Norman Lockyer and English chemist Edward
Frankland named the element.
Facts about Helium: Occurrence of the element Helium
Helium exists only as a monatomic gas Facts about Helium: Common Uses of Helium
Component of artificial
atmospheres and laser media
Refrigerant
Lifting gas for balloons
Superfluid in cryogenic research
Deep sea diving
Helium balloons, tanks, neon laser
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 |