Beyond Atomic Numbers — Every Element Has a Story
4.0026
18
1
S Block
Noble Gas
Helium was first detected in the Sun's spectrum in 1868 by Pierre Janssen and Norman Lockyer before it was discovered on Earth.
Helium is produced naturally by radioactive decay inside Earth's crust and is abundant in stars throughout the universe.
Group 18 | Period 1 | S Block | Noble Gas
Helium is used in cryogenics, MRI scanners, deep-sea diving mixtures, space technology and scientific research.
Neon, Argon and other Noble Gases
Helium is extremely inert and rarely reacts with any element.
Electronic Configuration: 1s²
Helium has the lowest boiling point of all elements and remains liquid near absolute zero.
Helium was discovered in the Sun before it was discovered on Earth, making it the first extraterrestrial element ever identified.