Europium

Statistics:

• Name: Europium
• Symbol: Eu
• Classification: Lanthanide
• Atomic Number: 63
• Atomic Mass: 151.964 g/mol
• Density: 5.25 g/cm³
• Melting: 822°C
• Boiling: 1597°C
• Protons & Electrons:63
• Neutrons:89
• Discovered: 1901
• Discovered By: Demarçay
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Electrons Per Energy Level:

• Level 1: 2
• Level 2: 8
• Level 3: 18
• Level 4: 25
• Level 5: 8
• Level 6: 2

Isotopes:

Isotope: Half-life

• ¹⁴⁷Eu: 24.1 days
• ¹⁴⁸Eu: 54.5 days
• ¹⁴⁹Eu: 93.1 days
• ¹⁵⁰Eu: 36.9 years
• ¹⁵¹Eu: stable
• ¹⁵²Eu: 13.537 years
• ^152m1Eu: 9.3116 hours
• ¹⁵³Eu: stable
• ¹⁵⁴Eu: 8.593 years
• ¹⁵⁵Eu: 4.7611 years
• ¹⁵⁶Eu: 15.19 days

Brief Summary

Europium is a Lanthanide with the symbol 'Eu' and contains 63 Protons & Electrons with 89 neutrons in the nucleus of the atom. Europium has an atomic mass of 151.964 g/mol and, at a temperature of 20°C, has a density of 5.25 g/cm³. It will melt at a temperature of 822°C and boil at 1597°C.

Europium was discovered by Demarçay in 1901 and is named 'Europium' Europe.

Some common usages for Europium: color televisions.

Definitions and Notes

Density listed is at a temperature of 20°C.

Isotopes are forms of an element who have the same atomic number but different mass because they contain different number of neutrons.

Half-life is the time required for a quantity of a subject to fall to half of its current quantity.

MLA Citing Format

Europium :: Eu :: 63 - Chemical Element. 22 Nov. 2008 <http://www.chemicalelement.com/element/europium.html>.