Elements
63

Eu

Europium

Europium (Eu) is a silvery-white coloured metal that has the atomic number 63 in the periodic table. It is a Lanthanide metal. It has the symbol Eu.

Europium is a hard metal that easily oxidises in air. It is the least abundant of the rare earth metals and its also the most reactive. It is not found as a free element but in ores such as xenotime and monazite. Europium is used in the printing of euro bank notes as it glows red under UV light to detect forgeries. Europium was discovered by Eugène-Antole Demarçay who in 1886 identified it by spectroscopy. It wasn’t until 1901 that Europium was isolated by crystalisation of samarium magnesium nitrate. It is a solid metal at room temperature with a melting point of 826°c and a boiling point of 1529°c.

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FAQ's

What is the Melting Point for Europium?

Europium has a Melting Point of 822°F, meaning at 822°F it will turn to a liquid.

What is the Boiling Point for Europium?

Europium has a Boiling Point of 1527°F, meaning at 1527°F it will turn to a Gas.

What is the Electronegativity of Europium?

Europium's Electronegativty is 1.2. Electronegativity is a measure of how strongly atoms attract bonding electrons to themselves.

What is the Heat of Vaporization of Europium?

Europium has a Heat of Vaporization of 143.5 kJ/mol.

Uses

Used with yttrium oxide to make red phosphors for color televisions.

Sources

Obtained from monazite sand, which is a mixture of phosphates of calcium, thorium, cerium, and most other rare earths.

63
Protons
63
Electrons
89
Neutrons

Eu

Element Symbol
Eu
Atomic Weight
151.964
Atomic Number
63
State
Solid
Melting Point
Unknown
822
°C
Boiling Point
1527
Unknown
°C
Heat of Vaporization
143.5
Unknown
kJ/mol
Crystal Structure
Cubic: Body centered
Thermoconductivity
0.139
Unknown
W/cmK
Shells
2,8,18,25,8,2
Group
Lanthanide
Period
6
Block
F Block
Orbitals
[Xe] 4f7 6s2
Coefficient of Thermal Expansion
41 10^-6 K^-1
Covalent Radius
1.85 Å
Density at 293K
5.259 g/cm³
Electrical Conductivity
0.0112 10^6/cm ohm
First Ionization Potential
5.6704 V
Second Ionization Potential
11.245 V
Third Ionization Potential
24.926 V
Ionic Radius
1.07 (+3) Å
Oxydation States
(3),2
Lattice Parameter
4.5822 Å
Lattice Parameter 2
--
Lattice Parameter 3
5.6477 Å
Pronounced

yoo-RO-pi-em

Discovered by

Eugène Demarçay

Discovery date

1901

Orbital configuration
2,8,18,25,8,2

Download the Periodic Table

Explore Other Lanthanides

158.925
65

Tb

Terbium
140.116
58

Ce

Cerium
157.25
64

Gd

Gadolinium
140.908
59

Pr

Praseodymium
168.934
69

Tm

Thulium
164.93
67

Ho

Holmium
144.24
60

Nd

Neodymium
150.36
62

Sm

Samarium
162.5
66

Dy

Dysprosium
145
61

Pm

Promethium
138.905
57

La

Lanthanum
174.967
71

Lu

Lutetium
167.259
68

Er

Erbium
173.045
70

Yb

Ytterbium
The lanthanide series contains 15 metallic elements from number 57 (lanthanum) to 71 (lutetium). They are located in group 3 and in the f-block of period six in the periodic table.
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Samarium

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Gadolinium

64