Element 63
Europium
Lanthanides
Europium (Eu) is in the f-block of the periodic table — group 3, period 6.
Europium is a chemical element with symbol Eu and atomic number 63.
Key data
- Atomic number
- 63
- Atomic mass
- 151.964 u
- Group / Period
- 3 / 6
- Block
- f-block
- Phase at STP
- Solid
- Density
- 5.264 g/cm³
- Melting point
- 825.9 °C
- Boiling point
- 1528.8 °C
- Electron configuration
- [Xe] 4f7 6s2
Periodic table block
Europium is in the f-block (group 3, period 6). Elements land in the f-block when their highest-energy electrons fill an f subshell — these are the lanthanides and actinides shown beneath the main table.
New to this? Periodic table blocks explained: s, p, d, and f
Common uses
- •Red phosphors in TVs
- •Anti-counterfeit euros
- •Lasers
Discovery
Year: 1901
Discovered by: Eugène-Anatole Demarçay
Frequently asked questions
What is the atomic number of Europium?
Europium has atomic number 63. Its symbol is Eu and its atomic mass is 151.964 u.
What category of element is Europium?
Europium is classified as lanthanides. It sits in group 3, period 6 of the periodic table.
What block of the periodic table is Europium in?
Europium is in the f-block (group 3, period 6). Its highest-energy electrons occupy the f subshell — you can see this in its electron configuration, [Xe] 4f7 6s2.
What is Europium used for?
Common uses of Europium include: Red phosphors in TVs, Anti-counterfeit euros, Lasers.
When was Europium discovered?
Europium was discovered in 1901 by Eugène-Anatole Demarçay.
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