What are the basic properties of Helium?
Helium (symbol: He) is a noble gas with atomic number 2. Its atomic mass is 4.0026 u, and it belongs to period 1 and group 18.
Helium (He) Properties and Facts
Element 2 - Noble Gas
What is the electron configuration of Helium?
The electron configuration is: 1s²
What are the physical properties of Helium?
Melting point: 0.95 K
Boiling point: 4.222 K
Density: 0.0001785 g/cm³
What are the known isotopes of Helium?
- He-3: 0.000137% abundance
- He-4: 99.999863% abundance
What is the biological role and occurrence of Helium?
Biological role: Not known
Natural occurrence: Found in natural gas deposits and the atmosphere