Einsteinium (Es) - 99 on the Periodic Table | Periodic Table

Standard IUPAC: Einsteinium • Symbol: Es • Atomic Mass: 252 u

Quick Factsheet: Einsteinium (symbol Es, atomic number 99) is element 99 on the periodic table of elements. It has a standard atomic weight of 252 u and an electron configuration of [Rn] 7s2 5f11. On the periodic table, Einsteinium is classified in period 7 and group Main.

1. Periodic Table Position of Einsteinium (99 on the Periodic Table)

Element Einsteinium has atomic number Z = 99, meaning it contains 99 protons in its atomic nucleus and 99 electrons in its neutral state. On the standard periodic table of elements, Einsteinium is located in period 7 and group Main.

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

Full Electron Configuration: [Rn] 7s2 5f11

Common Oxidation States (Charges): 2,3c

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

Element Einsteinium has a standard atomic weight of 252 u. Its melting point is 1133. K and boiling point is N/A K. The Pauling electronegativity value is 1.3.

Comprehensive chemical properties and data for Einsteinium (Es, Z=99).

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

4. Related Elements in the Same Chemical Family

Ac (Z=89) Th (Z=90) Pa (Z=91) U (Z=92) Np (Z=93) Pu (Z=94)

5. Frequently Asked Questions about Einsteinium (FAQ)

What is the chemical symbol and atomic number of Einsteinium?

The chemical symbol of Einsteinium is Es and its atomic number is 99.

What is the atomic mass and electron configuration of Einsteinium?

Einsteinium has a standard atomic mass of 252 u and ground-state electron configuration of [Rn] 7s2 5f11.

What periodic table group and period does Einsteinium belong to?

Einsteinium is located in period 7 and group Main on the periodic table of elements.

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