EUROPIUM, Eu (63)

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ATOMIC ARCHITECTURE

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Europium
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EUROPIUM

Eu (63)

jʊəˈroʊpiəm

PHONETICS

Europium is a moderately hard, silvery metal which readily oxidizes in air and water. There is no significant biological role and is relatively non-toxic. Most applications of europium exploit the phosphorescence of europium compounds.

ELEMENT BRIEF

1901 by Eugene Demarcay, France.

DISCOVERY

From the name of Europe.

ETYMOLOGY

Europium

ELEMENT

Eu

SYMBOL

63

ATOMIC NUMBER

7440-53-1

CAS NUMBER
element

ELEMENTAL SPECTRUM


Silver

ELEMENTAL COLOUR


-

REFRACTIVE INDEX


0.150

POISSON RATIO


28.979 cm³

MOLAR VOLUME


-

BRINELL HARDNESS


3.00

MOHS HARDNESS


167.00M Pa, 1.648'2k Atm

VICKERS HARDNESS


-

SPEED OF SOUND


8.30G Pa, 81.914'6k Atm

BULK MODULUS


7.90G Pa, 77.966'9k Atm

SHEAR MODULUS


18.00G Pa, 177.646'2k Atm

YOUNG MODULUS


ALLOTROPES

NONE

1,095.15 K, 822.00 °C

MELTING POINT


1,800.15 K, 1,527.00 °C

BOILING POINT


-

AUTOMATIC IGNITION


-

FLASHPOINT


-

CRITICAL TEMPERATURE


-

CRITICAL PRESSURE


14.000'000 W/(m K)

THERMAL CONDUCTIVITY


0.000'035'0 K¯¹

THERMAL EXPANSION


182.00 J/(kg K)

SPECIFIC HEAT


9.200 kJ/mol

HEAT FUSION


175.000 kJ/mol

HEAT VAPORISATION


-

HEAT COMBUSTION


-

CURIE POINT


90.50 K, -182.65 °C

NEEL POINT


-

ADIABATIC INDEX


Solid

PHASE

Conductor

ELECTRICAL TYPE


1.10M S/m

CONDUCTIVITY


900.00n Ω.m

RESISTIVITY


-

SUPERCONDUCTING POINT


Paramagnetic

MAGNETIC TYPE


0.000'000'276'0

MASS SUSCEPTIBILITY


0.000'000'041'942'00

MOLAR SUSCEPTIBILITY


0.001'447'300'00

VOLUME SUSCEPTIBILITY

Lanthanide

CLASSIFICATION


151.964'370'5

ATOMIC WEIGHT


231 pm

ATOMIC RADIUS


168 pm

COVALENT RADIUS SINGLE BOND


134 pm

COVALENT RADIUS DOUBLE BOND


-

COVALENT RADIUS TRIPLE BOND


233 pm

VAN DER WAALS RADIUS


[Xe]6s²4f⁷

ELECTRON CONFIGURATION


Cubic, Body-centred

CRYSTAL STRUCTURE


5.244'00 g/cm³

DENSITY AS SOLID


5.130'00 g/cm³

DENSITY AS LIQUID


-

DENSITY AS GAS


lm_3m

SPACE GROUP NAME


229

SPACE GROUP NUMBER


π/2, π/2 π/2

LATTICE ANGLES


458.1, 458.1 458.1 pm

LATTICE CONSTANTS

3

VALENCE


-

ELECTRONEGATIVITY


11.19 kJ/mol

ELECTRON AFFINITY


IONISATION ENERGY

element element element element

0.000'000'1 %

UNIVERSE


0.000'002'9 %

METEORITES


0.000'000'05 %

SUN


0.000'18 %

EARTH CRUST


0.000'000'000'01 %

OCEANS


-

HUMANS

Stable

HALF LIFE


Stable

LIFETIME


4f⁷ = 4, 3, +3, +1/2

QUANTUM NUMBERS


9.200'00 b σs

NEUTRON CROSS SECTION


4,530.000'00 b σa

NEUTRON MASS ABSORPTION


STABLE ISOTOPES

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UNSTABLE ISOTOPES

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ISOTOPIC CHAIN

CENTRALDATACORE

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