63
Eu
Europium
151.9641
Basic Information
Bohr Model
Descriptive Numbers
Mass
Periodic Position
Classification
Abundance
Color
Atomic Radius
Temperature
Density
Heat
Electrical Resistance
Magnetic Properties
Elasticity
Hardness
Etymology
Discovery & Isolation
Production & Use
Radioactivity
Electron Affinity
Dipole Polarity
Lattice
Electron & Quantum
List of Compounds
Basic Information
Bohr Model
Static
Interactive
Descriptive Numbers
CAS Number
7440-53-1
CID Number
CID23981
Mendeleev Number
25
Pettifor Number
18
Space Group Number
229
Glawe Number
17
Mass
Atomic Mass
151.9641 Da
Uncertainty
0.001
Periodic Position
X Position
10
Y Position
8
Period
6
Group
N/A
Classification
Block
f
Category
Lanthanides
Geochemical
Rare Earth and Similars
Goldschmidt
Lithophilic
Electrical Type
Conductive
Abundance
Seawater
1.3e-13 kg/L
Sun
9e-8 mole ratio to silicon
Earth Crust
0.000002 g
Solar System
9.7e-8 mole ratio to silicon
Meteorites
0.0000059 %
Color
Jmol
#61FFC7
Molcas Gv
#61FFC7
CPK
#FF1493
Atomic Radius
Empirical
185
Calculated
231
Rahm
280
Uff
349.3
Mm3
294
Alvarez
287
Covalent (Cordero)
198
Covalent (Pyykko)
168
Covalent (Pyykko Double)
134
Metallic
180.4
Temperature
Melting/Freeze (USE)
1099 °K
Melting/Freeze (WEL)
1099 °K
Melting/Freeze (CRC)
1095 °K
Melting/Freeze (LNG)
1095 °K
Boiling/Density (USE)
1802 °K
Boiling/Density (WEL)
1800 °K
Boiling/Density (CRC)
1802 °K
Boiling/Density (LNG)
1800 °K
Boiling/Density (Zhang)
1713 °K
Density
STP
5.264 kg/cm³
Solid (WEL)
5244 kg/cm³
Solid (CRC)
5240 kg/cm³
Solid (LNG)
5244 kg/cm³
Liquid (CR2)
5130 kg/cm³
Heat
Molar Volume
28.97 cm³/mol
Atomic Volume
28.9 cm³
Heat Of Fusion CRC
9.21 kJ/mol
Heat Of Fusion LNG
9.21 kJ/mol
Heat Of Fusion WEL
9.2 kJ/mol
Evaporation USE
176 kJ/mol
Evaporation LNG
176 kJ/mol
Evaporation WEL
175 kJ/mol
Evaporation Zhang
176 kJ/mol
Molar Heat
27.66 J/molK
Heat Capacity USE
0.176 J/gK
Heat Capacity CRC
27.66 J/gK
Heat Capacity LNG
27.66 J/gK
Heat Capacity WEL
27.7 J/gK
Thermal Conductivity
13.9 W/m*K
Thermal Expansion
0.000035 1/K
Adiabatic Index
N/A
Electrical Resistance
293k
900 nΩm
Magnetic Properties
Order
paramanyetic
Neel Point
90.5 Tn
Susceptibility
2.8e-7 m3/kg
Elasticity
Shear Modulus
7.9 GPa
Bulk Modulus
8.3 GPa
Poisson Ratio
0.152 ν
Youngs Modulus
18.2 GPa
Hardness
Vickers
167–200
Etymology
Description
It is a soft, silvery metal element found in the lanthanides group. Eu-151 and Eu-153 are the only stable isotopes, both of which are neutron absorbers. It was discovered by Sir William Crookes in 1889.
Language Of Origin
ancient greek
Origin Of Word
from the European continent
Meaning
broad-faced, wet
Symbol Origin
place name, mythological
Etymological Description
It was named after the Europe where it was discovered. The name Europe comes from the fictional Phoenician princess Europa.
Discovery & Isolation
Observed/Predicted By
AND THE. Demarçay
Observed/Discovery Year
1896
Discovery Location
Isolated Sample By
AND THE. Demarçay
Isolated Sample Year
1901
Production & Use
Sources
It is obtained from monazite sand, which is a phosphate mixture of calcium, thorium, cerium and many other rare earth elements.
Uses
It is used to make red phosphorus with yttrium oxide for color televisions.
Radioactivity
Half Life
Stable
Lifetime
Stable
Neutron Mass Absorption
0.6
Neutron Cross Section
4,450.00
Electron Affinity
Electron Affinity (eV)
0.864
Electron Affinity (kJ/mol)
11.2
Electron Affinity (pauling)
1.2
Electron Affinity (ghosh)
0.189935
Dipole Polarity
Accepted
184
Uncertainty
20
C6 GB
2940
Lattice
Constant Internal Default Radius
4.61
Strucutre
BCC
Angles
p/2, p/2, p/2
Electron & Quantum
Oxidation States
0,2,3
Electron Configuration
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f7
Quantum Number
rainbow/a
Electron Configuration Semantic
[Car] 4f7 6s2
Shells-0
2
Shells-1
8
Shells-2
18
Shells-3
25
Shells-4
8
Shells-5
2
Ionization Energies-0
547.1
Ionization Energies-1
1085
Ionization Energies-2
2404
Ionization Energies-3
4120
List of Compounds
1-10 of 43 compounds
| Formula | Names |
|---|---|
| Eu | europium europium metal |
| Eul3 | europium(III) iodide |
| Br2Eu | europium(II)bromide dibromoeuropium |
| Br3Eu | europium(III) bromide |
| Cl2Eu | europium(II)chloride dichloroeuropium |
| Cl3Eu | europium(III) chloride europicchloride europium(III) chloride hexahydrate europium trichloride trichloroeuropium |
| EuB6 | europium boride |
| EuF2 | europium(II) fluoride |
| EuF3 | europium(III)fluoride europic fluoride europium fluoride europium trifluoride trifluoroeuropium |
| EuI2 | europium(II)iodide diiodoeuropium |
