Astatine (At) - 85 on the Periodic Table | Periodic Table

Standard IUPAC: Astatine • Symbol: At • Atomic Mass: 210 u

Quick Factsheet: Astatine (symbol At, atomic number 85) is element 85 on the periodic table of elements. It has a standard atomic weight of 210 u and an electron configuration of [Xe] 6s2 4f14 5d10 6p5. On the periodic table, Astatine is classified in period 6 and group Main.

1. Periodic Table Position of Astatine (85 on the Periodic Table)

Element Astatine has atomic number Z = 85, meaning it contains 85 protons in its atomic nucleus and 85 electrons in its neutral state. On the standard periodic table of elements, Astatine is located in period 6 and group Main.

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

Full Electron Configuration: [Xe] 6s2 4f14 5d10 6p5

Common Oxidation States (Charges): -1c,1c,3,5,7

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

Element Astatine has a standard atomic weight of 210 u. Its melting point is 575. K and boiling point is 623. K. The Pauling electronegativity value is 2.2.

Comprehensive chemical properties and data for Astatine (At, Z=85).

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

4. Related Elements in the Same Chemical Family

B (Z=5) Si (Z=14) Ge (Z=32) As (Z=33) Sb (Z=51) Te (Z=52)

5. Frequently Asked Questions about Astatine (FAQ)

What is the chemical symbol and atomic number of Astatine?

The chemical symbol of Astatine is At and its atomic number is 85.

What is the atomic mass and electron configuration of Astatine?

Astatine has a standard atomic mass of 210 u and ground-state electron configuration of [Xe] 6s2 4f14 5d10 6p5.

What periodic table group and period does Astatine belong to?

Astatine is located in period 6 and group Main on the periodic table of elements.

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