BERYLLIUM, Be (4)

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Beryllium
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BERYLLIUM

Be (4)

bəˈrɪliəm

PHONETICS

Beryllium is created through stellar nucleosynthesis. It is a relatively rare element in the universe and is a divalent element which occurs naturally only in combination with other elements in minerals. Notable gemstones which contain beryllium include beryl, aquamarine and emerald.

ELEMENT BRIEF

1797, Nicholas Louis Vauquelin, France.

DISCOVERY

Ancient Greek, βήρυλλος (bḗrullos, 'beryl'), + -ium.

ETYMOLOGY

Beryllium

ELEMENT

Be

SYMBOL

4

ATOMIC NUMBER

7440-41-7

CAS NUMBER
element

ELEMENTAL SPECTRUM


Grey

ELEMENTAL COLOUR


-

REFRACTIVE INDEX


0.032

POISSON RATIO


4.877 cm³

MOLAR VOLUME


600.00M Pa, 5.921'5k Atm

BRINELL HARDNESS


5.50

MOHS HARDNESS


1.67G Pa, 16.481'6k Atm

VICKERS HARDNESS


13,000 m/s, Mach 37.900'9

SPEED OF SOUND


130.00G Pa, 1.283'0M Atm

BULK MODULUS


132.00G Pa, 1.302'7M Atm

SHEAR MODULUS


287.00G Pa, 2.832'5M Atm

YOUNG MODULUS


ALLOTROPES

element element element

1,560.15 K, 1,287.00 °C

MELTING POINT


2,743.15 K, 2,470.00 °C

BOILING POINT


-

AUTOMATIC IGNITION


-

FLASHPOINT


-

CRITICAL TEMPERATURE


-

CRITICAL PRESSURE


190.000'000 W/(m K)

THERMAL CONDUCTIVITY


0.000’011’3 K¯¹

THERMAL EXPANSION


1,820.00 J/(kg K)

SPECIFIC HEAT


7.950 kJ/mol

HEAT FUSION


297.000 kJ/mol

HEAT VAPORISATION


-

HEAT COMBUSTION


-

CURIE POINT


-

NEEL POINT


-

ADIABATIC INDEX


Solid

PHASE

Conductor

ELECTRICAL TYPE


25.00M S/m

CONDUCTIVITY


40.00n Ω.m

RESISTIVITY


0.026 K

SUPERCONDUCTING POINT


Diamagnetic

MAGNETIC TYPE


-0.000'000'012'6

MASS SUSCEPTIBILITY


-0.000'000'000'113'60

MOLAR SUSCEPTIBILITY


-0.000'023'280'00

VOLUME SUSCEPTIBILITY

Alkaline Earth

CLASSIFICATION


9.012'182'2

ATOMIC WEIGHT


112 pm

ATOMIC RADIUS


102 pm

COVALENT RADIUS SINGLE BOND


90 pm

COVALENT RADIUS DOUBLE BOND


85 pm

COVALENT RADIUS TRIPLE BOND


153 pm

VAN DER WAALS RADIUS


[He]2s²

ELECTRON CONFIGURATION


Hexagonal, Close Packed Single

CRYSTAL STRUCTURE


1.848'00 g/cm³

DENSITY AS SOLID


1.690'00 g/cm³

DENSITY AS LIQUID


-

DENSITY AS GAS


P6₃/mmc

SPACE GROUP NAME


194

SPACE GROUP NUMBER


π/2, π/2 & 2π/3

LATTICE ANGLES


228.58, 228.58 & 358.43 pm

LATTICE CONSTANTS

2

VALENCE


1.57

ELECTRONEGATIVITY


-48.24 kJ/mol

ELECTRON AFFINITY


IONISATION ENERGY

element element element element

0.000'000'1 %

UNIVERSE


0.000'002'9 %

METEORITES


0.000'000'01 %

SUN


0.000'19 %

EARTH CRUST


0.000'000'000'06 %

OCEANS


0.000'000'5 %

HUMANS

Stable

HALF LIFE


Stable

LIFETIME


2s² = 2, 0, 0, -1/2

QUANTUM NUMBERS


7.630'00 b σs

NEUTRON CROSS SECTION


0.007'60 b σa

NEUTRON MASS ABSORPTION


STABLE ISOTOPES

element

UNSTABLE ISOTOPES

element element element element
element element element element
element element element

ISOTOPIC CHAIN

CENTRALDATACORE

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