YTTERBIUM, Yb (70)

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Ytterbium
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YTTERBIUM

Yb (70)

ɪˈtɜːbiəm

PHONETICS

Ytterbium is a soft, malleable and ductile chemical element that displays a bright silvery lustre when in its pure form. It is a rare earth element and it is readily attacked and dissolved by the strong mineral acids. It reacts slowly with cold water and it oxidizes slowly in air. Natural ytterbium is a mixture of seven stable isotopes, which altogether are present at concentrations of 3 parts per million.

ELEMENT BRIEF

1878 by Jean de Marignac, Switzerland.

DISCOVERY

From the name of Ytterby near Vaxholm in Sweden.

ETYMOLOGY

Ytterbium

ELEMENT

Yb

SYMBOL

70

ATOMIC NUMBER

7440-64-4

CAS NUMBER
element

ELEMENTAL SPECTRUM


Silver

ELEMENTAL COLOUR


-

REFRACTIVE INDEX


0.210

POISSON RATIO


26.338 cm³

MOLAR VOLUME


343.00M Pa, 3.385'1k Atm

BRINELL HARDNESS


-

MOHS HARDNESS


343.00M Pa, 3.385'1k Atm

VICKERS HARDNESS


1,590 m/s, Mach 4.635'6

SPEED OF SOUND


31.00G Pa, 305.946'2k Atm

BULK MODULUS


9.90G Pa, 97.705'4k Atm

SHEAR MODULUS


24.00G Pa, 236.861'6k Atm

YOUNG MODULUS


ALLOTROPES

element element element

1,092.15 K, 819.00 °C

MELTING POINT


1,469.15 K, 1,196.00 °C

BOILING POINT


-

AUTOMATIC IGNITION


-

FLASHPOINT


-

CRITICAL TEMPERATURE


-

CRITICAL PRESSURE


39.000'000 W/(m K)

THERMAL CONDUCTIVITY


0.000'026'3 K¯¹

THERMAL EXPANSION


154.00 J/(kg K)

SPECIFIC HEAT


7.700 kJ/mol

HEAT FUSION


160.000 kJ/mol

HEAT VAPORISATION


-

HEAT COMBUSTION


-

CURIE POINT


-

NEEL POINT


-

ADIABATIC INDEX


Solid

PHASE

Conductor

ELECTRICAL TYPE


3.60M S/m

CONDUCTIVITY


280.00n Ω.m

RESISTIVITY


-

SUPERCONDUCTING POINT


-

MAGNETIC TYPE


0.000'000'005'9

MASS SUSCEPTIBILITY


0.000'000'001'020'00

MOLAR SUSCEPTIBILITY


0.000'038'800'00

VOLUME SUSCEPTIBILITY

Lanthanide

CLASSIFICATION


173.037'695'6

ATOMIC WEIGHT


217 pm

ATOMIC RADIUS


170 pm

COVALENT RADIUS SINGLE BOND


129 pm

COVALENT RADIUS DOUBLE BOND


-

COVALENT RADIUS TRIPLE BOND


242 pm

VAN DER WAALS RADIUS


[Xe]6s²4f¹⁴

ELECTRON CONFIGURATION


Cubic, Face-centred

CRYSTAL STRUCTURE


6.570'00 g/cm³

DENSITY AS SOLID


6.210'00 g/cm³

DENSITY AS LIQUID


-

DENSITY AS GAS


Fm_3m

SPACE GROUP NAME


225

SPACE GROUP NUMBER


π/2, π/2 π/2

LATTICE ANGLES


548.47, 548.47 548.47 pm

LATTICE CONSTANTS

3

VALENCE


-

ELECTRONEGATIVITY


-1.93 kJ/mol

ELECTRON AFFINITY


IONISATION ENERGY

element element element element

0.000'000'2 %

UNIVERSE


0.000'018 %

METEORITES


0.000'000'1 %

SUN


0.000'28 %

EARTH CRUST


0.000'000'000'08 %

OCEANS


-

HUMANS

Stable

HALF LIFE


Stable

LIFETIME


4f¹⁴ = 4, 3, +3, -1/2

QUANTUM NUMBERS


23.400'00 b σs

NEUTRON CROSS SECTION


34.800'00 b σa

NEUTRON MASS ABSORPTION


STABLE ISOTOPES

element element element element
element element element

UNSTABLE ISOTOPES

element element element element
element element element element
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element element element element
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element element element element

ISOTOPIC CHAIN

CENTRALDATACORE

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