BARIUM, Ba (56)
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ATOMIC ARCHITECTURE
BARIUM
Ba (56)
ˈbɛəriəm
PHONETICS
Barium is a soft silvery metal and due to its high chemical reactivity it is never found in nature as a free element. Its hydroxide was known in pre-modern history as baryta; this substance does not occur as a mineral, but can be prepared by heating barium carbonate.
ELEMENT BRIEF
1808 by Sir Humphrey Davy, England.
DISCOVERY
Greek, 'barys' meaning 'heavy'.
ETYMOLOGY
Barium
ELEMENT
Ba
SYMBOL
56
ATOMIC NUMBER
7440-39-3
CAS NUMBER
ELEMENTAL SPECTRUM
Silver
ELEMENTAL COLOUR
-
REFRACTIVE INDEX
-
POISSON RATIO
38.920 cm³
MOLAR VOLUME
-
BRINELL HARDNESS
1.25
MOHS HARDNESS
-
VICKERS HARDNESS
1,620 m/s, Mach 4.723'0
SPEED OF SOUND
9.60G Pa, 94.744'6k Atm
BULK MODULUS
4.90G Pa, 48.359'2k Atm
SHEAR MODULUS
13.00G Pa, 128.300'0k Atm
YOUNG MODULUS
ALLOTROPES
1,000.15 K, 727.00 °C
MELTING POINT
2,143.15 K, 1,870.00 °C
BOILING POINT
-
AUTOMATIC IGNITION
-
FLASHPOINT
-
CRITICAL TEMPERATURE
-
CRITICAL PRESSURE
18.000'000 W/(m K)
THERMAL CONDUCTIVITY
0.000'020'6 K¯¹
THERMAL EXPANSION
205.00 J/(kg K)
SPECIFIC HEAT
8.000 kJ/mol
HEAT FUSION
140.000 kJ/mol
HEAT VAPORISATION
-
HEAT COMBUSTION
-
CURIE POINT
-
NEEL POINT
-
ADIABATIC INDEX
Solid
PHASE
Conductor
ELECTRICAL TYPE
2.90M S/m
CONDUCTIVITY
350.00n Ω.m
RESISTIVITY
-
SUPERCONDUCTING POINT
Paramagnetic
MAGNETIC TYPE
0.000'000'011'3
MASS SUSCEPTIBILITY
0.000'000'001'552'00
MOLAR SUSCEPTIBILITY
0.000'039'660'00
VOLUME SUSCEPTIBILITY
Alkaline Earth
CLASSIFICATION
136.610'327'8
ATOMIC WEIGHT
253 pm
ATOMIC RADIUS
196 pm
COVALENT RADIUS SINGLE BOND
161 pm
COVALENT RADIUS DOUBLE BOND
149 pm
COVALENT RADIUS TRIPLE BOND
268 pm
VAN DER WAALS RADIUS
[Xe]6s²
ELECTRON CONFIGURATION
Cubic, Body-centred
CRYSTAL STRUCTURE
3.510'00 g/cm³
DENSITY AS SOLID
3.338'00 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
502.8, 502.8 502.8 pm
LATTICE CONSTANTS
2
VALENCE
0.89
ELECTRONEGATIVITY
13.95 kJ/mol
ELECTRON AFFINITY
IONISATION ENERGY
0.000'001 %
UNIVERSE
0.000'27 %
METEORITES
0.000'001 %
SUN
0.034 %
EARTH CRUST
0.000'007 %
OCEANS
0.000'03 %
HUMANS
Stable
HALF LIFE
Stable
LIFETIME
6s² = 6, 0, 0, -1/2
QUANTUM NUMBERS
3.380'00 b σs
NEUTRON CROSS SECTION
1.100'00 b σa
NEUTRON MASS ABSORPTION
STABLE ISOTOPES
UNSTABLE ISOTOPES
ISOTOPIC CHAIN
CENTRALDATACORE
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