Materials Home
Pure Elements
Periodic Table
Element List
  by Name
  by Symbol
  by Atomic Number
  by Atomic Weight
Element Information
Resources
Bibliography
Selecting the Right 3D Printer

Discover how to choose the right 3D printer for your needs and the key performance attributes to consider.

Essentials of Manufacturing

Information, coverage of important developments and expert commentary in manufacturing.

STEM Career Outlook

Wages, employment opportunities, and growth projections for STEM jobs.

Salary Expectation

8 things to know about the interview question "What's your salary expectation"?

more free publications
Helium
2
He
4.0026
Atomic Number 2
Atomic Weight 4.0026
Electron Config. 2
Electron configuration order: 1s-2s-2p-3s-3p-3d-4s-4p-4d-4f-5s-5p-5d-5f-6s-6p-6d-7s

Mechanical Properties Conditions
Phase Temp. (K) Pressure (Pa)
Density 0.1785 kg/m3 Gas  293.15  101325 
Density 124.901 kg/m3 Liquid  4.2221  101325 

Thermal Properties Conditions
Temp. (K) Pressure (Pa)
Melting Temperature 3.5 K   101325 
Boiling Temperature 4.22 K   101325 
Critical Temperature 5.19 K    
Fusion Enthalpy 2.1 J/g 101325 
Vaporization Enthalpy 20.71 J/g 101325 
Heat Capacity 5193 J/kg-K 298.149993896 100000 
 
Glossary
Selecting the Right 3D Printer

Discover how to choose the right 3D printer for your needs and the key performance attributes to consider.

Essentials of Manufacturing

Information, coverage of important developments and expert commentary in manufacturing.

STEM Career Outlook

Wages, employment opportunities, and growth projections for STEM jobs.

Salary Expectation

8 things to know about the interview question "What's your salary expectation"?