Actinium (Ac) - 89 on the Periodic Table | Periodic Table
Standard IUPAC: Actinium • Symbol: Ac • Atomic Mass: 227 u
1. Periodic Table Position of Actinium (89 on the Periodic Table)
Element Actinium has atomic number Z = 89, meaning it contains 89 protons in its atomic nucleus and 89 electrons in its neutral state. On the standard periodic table of elements, Actinium is located in period 7 and group Main.
2. Electron Configuration & Oxidation States (Actinium Charges & Configuration)
[Rn] 7s2 6d1
3. Physical Properties & Atomic Mass (Actinium Atomic Mass)
Element Actinium has a standard atomic weight of 227 u. Its melting point is 1323. K and boiling point is 3473. K. The Pauling electronegativity value is 1.1.
Comprehensive chemical properties and data for Actinium (Ac, Z=89).
4. Related Elements in the Same Chemical Family
5. Frequently Asked Questions about Actinium (FAQ)
What is the chemical symbol and atomic number of Actinium?
The chemical symbol of Actinium is Ac and its atomic number is 89.
What is the atomic mass and electron configuration of Actinium?
Actinium has a standard atomic mass of 227 u and ground-state electron configuration of [Rn] 7s2 6d1.
What periodic table group and period does Actinium belong to?
Actinium is located in period 7 and group Main on the periodic table of elements.