BERYLLIUM, Be (4)
HYDROGEN TO OGANESSON
ATOMIC ARCHITECTURE
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
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
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
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
UNSTABLE ISOTOPES
ISOTOPIC CHAIN
CENTRALDATACORE
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