Argon (Ar) - 18 on the Periodic Table | Periodic Table

Standard IUPAC: Argon • Symbol: Ar • Atomic Mass: 39.948 u

Quick Factsheet: Argon (symbol Ar, atomic number 18) is element 18 on the periodic table of elements. It has a standard atomic weight of 39.948 u and an electron configuration of [Ne] 3s2 3p6. On the periodic table, Argon is classified in period 3 and group Main.

1. Periodic Table Position of Argon (18 on the Periodic Table)

Element Argon has atomic number Z = 18, meaning it contains 18 protons in its atomic nucleus and 18 electrons in its neutral state. On the standard periodic table of elements, Argon is located in period 3 and group Main.

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

Full Electron Configuration: [Ne] 3s2 3p6

Common Oxidation States (Charges): N/A

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

Element Argon has a standard atomic weight of 39.948 u. Its melting point is 83.8 K and boiling point is 87.3 K. The Pauling electronegativity value is N/A.

Comprehensive chemical properties and data for Argon (Ar, Z=18).

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

4. Related Elements in the Same Chemical Family

He (Z=2) Ne (Z=10) Kr (Z=36) Xe (Z=54) Rn (Z=86)

5. Frequently Asked Questions about Argon (FAQ)

What is the chemical symbol and atomic number of Argon?

The chemical symbol of Argon is Ar and its atomic number is 18.

What is the atomic mass and electron configuration of Argon?

Argon has a standard atomic mass of 39.948 u and ground-state electron configuration of [Ne] 3s2 3p6.

What periodic table group and period does Argon belong to?

Argon is located in period 3 and group Main on the periodic table of elements.

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