What is the atomic number of Einsteinium?

The atomic number of Einsteinium (Es) is 99.

What is the atomic mass of Einsteinium?

The atomic mass of Einsteinium is 252.0 atomic mass units (u).

What group and period is Einsteinium in?

Einsteinium is in period 7, group 0 of the periodic table. It is a actinide element in the f-block.

How many valence electrons does Einsteinium have?

Einsteinium has 3 valence electron(s).

Einsteinium (Es) — Atomic Number 99

Q: What is the electron configuration of Einsteinium?

The electron configuration of Einsteinium is [Rn] 5f11 7s2.

Einsteinium (Es) — Atomic Number 99Discovered in H-bomb debris, glows in dark.Einsteinium Properties

Atomic Number: 99

Symbol: Es

Atomic Mass: 252.0 u

Category: actinide

Group: 0

Period: 7

Block: f-block

Electron Configuration: [Rn] 5f11 7s2

Valence Electrons: 3

Electronegativity: 1.3

Ionization Energy: 619.0 kJ/mol

Electron Affinity: 0.0 kJ/mol

Atomic Radius: 186.0 pm

Melting Point: 1133.0 K

Boiling Point: 1269.0 K

Einsteinium in the Periodic TableEinsteinium is a actinide element located in period 7, group 0 of the periodic table. It has the chemical symbol Es and atomic number 99. The electron configuration of Einsteinium is [Rn] 5f11 7s2, giving it 3 valence electron(s).Interactive Einsteinium LearningExplore Einsteinium in interactive 3D with the Soren Periodic Table. View Bohr model, quantum orbital model, nucleus inspector, and phase lab with temperature and pressure controls. Includes fun facts, real-world uses, and NCTB curriculum integration for Bangladeshi students.