Helium (He) - 2 on the Periodic Table | Periodic Table

Standard IUPAC: Helium • Symbol: He • Atomic Mass: 4.002602 u

Quick Factsheet: Helium (symbol He, atomic number 2) is element 2 on the periodic table of elements. It has a standard atomic weight of 4.002602 u and an electron configuration of 1s2. On the periodic table, Helium is classified in period 1 and group Main.

1. Periodic Table Position of Helium (2 on the Periodic Table)

Element Helium has atomic number Z = 2, meaning it contains 2 protons in its atomic nucleus and 2 electrons in its neutral state. On the standard periodic table of elements, Helium is located in period 1 and group Main.

2. Electron Configuration & Oxidation States (Helium Charges & Configuration)

Full Electron Configuration: 1s2

Common Oxidation States (Charges): N/A

3. Physical Properties & Atomic Mass (Helium Atomic Mass)

Element Helium has a standard atomic weight of 4.002602 u. Its melting point is N/A K and boiling point is 4.22 K. The Pauling electronegativity value is N/A.

Comprehensive chemical properties and data for Helium (He, Z=2).

Explore interactive 3D electron orbitals, isotopes, and properties on the periodic table: Open on Interactive Table 🚀

4. Related Elements in the Same Chemical Family

Ne (Z=10) Ar (Z=18) Kr (Z=36) Xe (Z=54) Rn (Z=86)

5. Frequently Asked Questions about Helium (FAQ)

What is the chemical symbol and atomic number of Helium?

The chemical symbol of Helium is He and its atomic number is 2.

What is the atomic mass and electron configuration of Helium?

Helium has a standard atomic mass of 4.002602 u and ground-state electron configuration of 1s2.

What periodic table group and period does Helium belong to?

Helium is located in period 1 and group Main on the periodic table of elements.

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