What is the atomic number of Helium?

The atomic number of Helium (He) is 2.

What is the atomic mass of Helium?

The atomic mass of Helium is 4.0026 u.

What is the electron configuration of Helium?

The electron configuration of Helium is 1s2.

How many valence electrons does Helium have?

Helium has 8 valence electron(s).

Helium (He) — Atomic Number 2 | Soren Periodic Table

Helium (He) — Atomic Number 2Inert noble gas, second most abundant element in universe.Helium Properties

Atomic Number: 2

Symbol: He

Atomic Mass: 4.0026 u

Category: noble-gas

Electron Configuration: 1s2

Valence Electrons: 8

Period: 1

Group: 18

Interactive Helium Learning with Soren ChemistryExplore Helium in interactive 3D with the Soren Periodic Table (also known as Periodic Soren, Soren Chemistry, or SorenChem). Part of the Soren Chat education platform at sorenchat.com.Soren Periodic Table is a product of Soren — making chemistry accessible for students in Bangladesh and worldwide.