Mendeleev فارسی

Europium (Eu) – Element 63 of the periodic table

Europium (symbol Eu) is element number 63 of the periodic table and belongs to the “Lanthanide” category. Its atomic mass is about 151.96, and its phase under standard conditions is Solid. This element sits in period 6 and the f-block (Lanthanides) of the periodic table, and its electrons are arranged in shells of 2, 8, 18, 25, 8, 2. The short electron configuration of Europium is [Xe] 4f⁷ 6s². Known uses of Europium include Color phosphors, Lasers and Banknotes.

View in the interactive periodic tableAsk the AI assistant

Properties of Europium

Atomic number
63
Chemical symbol
Eu
Atomic mass
151.96
Category
Lanthanide
Period
6
Block
f
Phase
Solid
Protons
63
Electrons
63
Neutrons (approx.)
89
Electron shells
2, 8, 18, 25, 8, 2
Outer-shell electrons
2
Discovered
Eugène-Anatole Demarçay (1896)

Electron configuration of Europium

The electron configuration of Europium (Eu), with 63 electrons, is shown below. The last shell (shell 6) is highlighted:

Full configuration
1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 4f⁷ 5s² 5p⁶ 6s²
Short configuration
[Xe] 4f⁷ 6s²
Last shell
6s²

What is electron configuration and how is it written?

Electron shells of Europium

Distribution of 63 electrons of Europium across shells K to P:

  1. K2
  2. L8
  3. M18
  4. N25
  5. O8
  6. P2

What is a lanthanide?

The lanthanides are the 15 elements from lanthanum to lutetium, part of the f-block, with very similar chemical properties; they are often grouped among the “rare earths”.

Uses of Europium

Frequently asked questions about Europium

What is the atomic number of Europium?

The atomic number of Europium (Eu) is 63; that is, every atom of it has 63 protons.

What is the electron configuration of Europium?

The electron configuration of Europium (Eu) is 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 4f⁷ 5s² 5p⁶ 6s²; in short form it is [Xe] 4f⁷ 6s², and its last shell is 6s².

What is the chemical symbol of Europium?

The chemical symbol of Europium is Eu.

Where is Europium located in the periodic table?

Europium is located in period 6 and the f-block (Lanthanides) and belongs to the “Lanthanide” category.

What is the atomic mass of Europium?

The atomic mass of Europium is about 151.96 (atomic mass units).

What is the phase of Europium under normal conditions?

The phase of Europium under standard conditions is Solid.

What are the uses of Europium?

Uses of Europium include Color phosphors, Lasers and Banknotes.

Who discovered Europium?

Europium was discovered by Eugène-Anatole Demarçay in 1896.

Elements in the same category as Europium (Lanthanide)

Lanthanum (La)Cerium (Ce)Praseodymium (Pr)Neodymium (Nd)Promethium (Pm)Samarium (Sm)Gadolinium (Gd)Terbium (Tb)Dysprosium (Dy)Holmium (Ho)Erbium (Er)Thulium (Tm)Ytterbium (Yb)Lutetium (Lu)

See all Lanthanides