Barium

Barium (Ba)

grundstof med atomnummer 56
Atomnummer56
Atommasse137.327
mass number138
Gruppe2
Periode6
Bloks
proton56 p+
neutron82 n0
elektron56 e-
Animated Bohrs atommodel of Ba (Barium)

Fysisk Egenskab

Atomradius
molar volume
Kovalent Radius
Metallic Radius
Ionisk radius
Crystal Radius
Van der Waals-radius
massefylde
Atomic Radii Of The Elements: Barium0102030405060708090100110120130140150160170180190200210220230240250260270pmAtomradiusKovalent RadiusMetallic RadiusVan der Waals-radius

Kemisk Egenskab

energi
proton affinity
electron affinity
ioniseringsenergi
ioniseringsenergi of Ba (Barium)
Fordampningsvarme
smeltevarme
standard enthalpy of formation
elektron
Elektronskal2, 8, 18, 18, 8, 2
Bohrs atommodel: Ba (Barium)
Valenselektron2
Elektronprikmodellen: Ba (Barium)
electron configuration[Xe] 6s2
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2
Enhanced Bohrs atommodel of Ba (Barium)
Orbital Diagram of Ba (Barium)
Oxidationstrin1, 2
Elektronegativitet
0.89
Electrophilicity Index
fundamental state of matter
stoffaseFast stof
gaseous state of matter
Kogepunkt
Smeltepunkt
critical pressure
critical temperature
trippelpunkt
appearance
farve
Silver
appearance
Brydningsindeks
materialeegenskab
Varmeledningsevne
Termisk ekspansion
molar heat capacity
Varmefylde
Adiabateksponenten
electrical properties
typeConductor
specifik ledningsevne
Elektrisk resistivitet
superledning
Magnetisme
typeparamagnetic
magnetic susceptibility (Mass)
0,0000000113 m³/Kg
magnetic susceptibility (Molar)
0,000000001552 m³/mol
magnetic susceptibility (Volume)
0,00003966
magnetic ordering
Curietemperaturen
Néel temperature
struktur
KrystalstrukturRumcentreret Kubisk (BCC)
lattice constant
Lattice Anglesπ/2, π/2, π/2
mechanical property
hårdhed
Kompressibilitetsmodul
Forskydningsmodul
E-modul
Poissons forhold
speed of sound
klassificering
KategoriJordalkalimetaller, Alkaline earth metals
CAS GroupIIA
IUPAC GroupIIA
Glawe Number14
Mendeleev Number9
Pettifor Number14
Geochemical Classalkaline earth metal
Goldschmidt classificationlitophile

øvrige

Gas Basicity
polarizability
C6 Dispersion Coefficient
allotrope
Neutron cross section
1,3
Neutron Mass Absorption
0,00027
quantum number1S0
rumgruppe229 (Im_3m)

Isotopes of Barium

Stable Isotopes5
Unstable Isotopes37
Natural Isotopes7
Isotopic Composition13871.70%13871.70%13711.23%13711.23%1367.85%1367.85%1356.59%1356.59%1342.42%1342.42%1300.11%1300.11%1320.10%1320.10%

113Ba

mass number113
neutron number57
Relative Atomic Mass
g-factor
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
spin5/2
nuclear quadrupole moment
opdagelsesdato
Paritet+

decay modeIntensitet
p (proton emission)
α (α emission)

114Ba

mass number114
neutron number58
Relative Atomic Mass
g-factor
0
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
460 ± 125 ms
spin0
nuclear quadrupole moment
0
opdagelsesdato1995
Paritet+

decay modeIntensitet
β+ (β+ decay; β+ = ϵ + e+)100%
β+ p (β+-delayed proton emission)20%
α (α emission)0.9%
12C0.0034%

115Ba

mass number115
neutron number59
Relative Atomic Mass
g-factor
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
450 ± 50 ms
spin5/2
nuclear quadrupole moment
opdagelsesdato1997
Paritet+

decay modeIntensitet
β+ (β+ decay; β+ = ϵ + e+)100%
β+ p (β+-delayed proton emission)15%

116Ba

mass number116
neutron number60
Relative Atomic Mass
g-factor
0
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
1,3 ± 0,2 s
spin0
nuclear quadrupole moment
0
opdagelsesdato1997
Paritet+

decay modeIntensitet
β+ (β+ decay; β+ = ϵ + e+)100%
β+ p (β+-delayed proton emission)3%

117Ba

mass number117
neutron number61
Relative Atomic Mass
g-factor
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
1,75 ± 0,07 s
spin3/2
nuclear quadrupole moment
opdagelsesdato1977
Paritet+

decay modeIntensitet
β+ (β+ decay; β+ = ϵ + e+)100%
β+ p (β+-delayed proton emission)13%
β+α (β+-delayed α emission)0.024%

118Ba

mass number118
neutron number62
Relative Atomic Mass
g-factor
0
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
5,2 ± 0,2 s
spin0
nuclear quadrupole moment
0
opdagelsesdato1997
Paritet+

decay modeIntensitet
β+ (β+ decay; β+ = ϵ + e+)100%

119Ba

mass number119
neutron number63
Relative Atomic Mass
g-factor
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
5,4 ± 0,3 s
spin5/2
nuclear quadrupole moment
opdagelsesdato1974
Paritet+

decay modeIntensitet
β+ (β+ decay; β+ = ϵ + e+)100%
β+ p (β+-delayed proton emission)25%

120Ba

mass number120
neutron number64
Relative Atomic Mass
g-factor
0
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
24 ± 2 s
spin0
nuclear quadrupole moment
0
opdagelsesdato1974
Paritet+

decay modeIntensitet
β+ (β+ decay; β+ = ϵ + e+)100%

121Ba

mass number121
neutron number65
Relative Atomic Mass
g-factor
0,264 ± 0,0004
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
29,7 ± 1,5 s
spin5/2
nuclear quadrupole moment
1,89 ± 0,13
opdagelsesdato1975
Paritet+

decay modeIntensitet
β+ (β+ decay; β+ = ϵ + e+)100%
β+ p (β+-delayed proton emission)0.02%

122Ba

mass number122
neutron number66
Relative Atomic Mass
g-factor
0
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
1,95 ± 0,15 m
spin0
nuclear quadrupole moment
0
opdagelsesdato1974
Paritet+

decay modeIntensitet
β+ (β+ decay; β+ = ϵ + e+)100%

123Ba

mass number123
neutron number67
Relative Atomic Mass
g-factor
-0,272 ± 0,0004
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
2,7 ± 0,4 m
spin5/2
nuclear quadrupole moment
1,57 ± 0,13
opdagelsesdato1962
Paritet+

decay modeIntensitet
β+ (β+ decay; β+ = ϵ + e+)100%

124Ba

mass number124
neutron number68
Relative Atomic Mass
g-factor
0
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
11 ± 0,5 m
spin0
nuclear quadrupole moment
0
opdagelsesdato1967
Paritet+

decay modeIntensitet
β+ (β+ decay; β+ = ϵ + e+)100%

125Ba

mass number125
neutron number69
Relative Atomic Mass
g-factor
0,354 ± 0,024
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
3,3 ± 0,3 m
spin1/2
nuclear quadrupole moment
0
opdagelsesdato1968
Paritet+

decay modeIntensitet
β+ (β+ decay; β+ = ϵ + e+)100%

126Ba

mass number126
neutron number70
Relative Atomic Mass
g-factor
0
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
100 ± 2 m
spin0
nuclear quadrupole moment
0
opdagelsesdato1954
Paritet+

decay modeIntensitet
β+ (β+ decay; β+ = ϵ + e+)100%

127Ba

mass number127
neutron number71
Relative Atomic Mass
g-factor
0,1668 ± 0,002
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
12,7 ± 0,4 m
spin1/2
nuclear quadrupole moment
0
opdagelsesdato1952
Paritet+

decay modeIntensitet
β+ (β+ decay; β+ = ϵ + e+)100%

128Ba

mass number128
neutron number72
Relative Atomic Mass
g-factor
0
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
2,43 ± 0,05 d
spin0
nuclear quadrupole moment
0
opdagelsesdato1950
Paritet+

decay modeIntensitet
ϵ (electron capture)100%

129Ba

mass number129
neutron number73
Relative Atomic Mass
g-factor
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
2,23 ± 0,11 h
spin1/2
nuclear quadrupole moment
0
opdagelsesdato1950
Paritet+

decay modeIntensitet
β+ (β+ decay; β+ = ϵ + e+)100%

130Ba

mass number130
neutron number74
Relative Atomic Mass
g-factor
0
natural abundance
0,11 ± 0,01
radioaktivitet☢️ radioactive element
halveringstid
spin0
nuclear quadrupole moment
0
opdagelsesdato1936
Paritet+

decay modeIntensitet
+ (double β+ decay)

131Ba

mass number131
neutron number75
Relative Atomic Mass
g-factor
1,4166 ± 0,0004
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
11,52 ± 0,01 d
spin1/2
nuclear quadrupole moment
0
opdagelsesdato1947
Paritet+

decay modeIntensitet
β+ (β+ decay; β+ = ϵ + e+)100%

132Ba

mass number132
neutron number76
Relative Atomic Mass
g-factor
0
natural abundance
0,1 ± 0,01
radioaktivitet☢️ radioactive element
halveringstid
spin0
nuclear quadrupole moment
0
opdagelsesdato1936
Paritet+

decay modeIntensitet
+ (double β+ decay)

133Ba

mass number133
neutron number77
Relative Atomic Mass
g-factor
1,5438 ± 0,0004
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
10,5379 ± 0,0016 y
spin1/2
nuclear quadrupole moment
0
opdagelsesdato1941
Paritet+

decay modeIntensitet
ϵ (electron capture)100%

134Ba

mass number134
neutron number78
Relative Atomic Mass
g-factor
0
natural abundance
2,42 ± 0,15
radioaktivitetstable isotope
halveringstidNot Radioactive ☢️
spin0
nuclear quadrupole moment
0
opdagelsesdato1936
Paritet+

135Ba

mass number135
neutron number79
Relative Atomic Mass
g-factor
0,55873333333333 ± 0,00013333333333333
natural abundance
6,59 ± 0,1
radioaktivitetstable isotope
halveringstidNot Radioactive ☢️
spin3/2
nuclear quadrupole moment
0,153 ± 0,002
opdagelsesdato1932
Paritet+

136Ba

mass number136
neutron number80
Relative Atomic Mass
g-factor
0
natural abundance
7,85 ± 0,24
radioaktivitetstable isotope
halveringstidNot Radioactive ☢️
spin0
nuclear quadrupole moment
0
opdagelsesdato1932
Paritet+

137Ba

mass number137
neutron number81
Relative Atomic Mass
g-factor
0,625 ± 0,00013333333333333
natural abundance
11,23 ± 0,23
radioaktivitetstable isotope
halveringstidNot Radioactive ☢️
spin3/2
nuclear quadrupole moment
0,236 ± 0,003
opdagelsesdato1932
Paritet+

138Ba

mass number138
neutron number82
Relative Atomic Mass
g-factor
0
natural abundance
71,7 ± 0,29
radioaktivitetstable isotope
halveringstidNot Radioactive ☢️
spin0
nuclear quadrupole moment
0
opdagelsesdato1925
Paritet+

139Ba

mass number139
neutron number83
Relative Atomic Mass
g-factor
-0,278 ± 0,0014285714285714
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
82,93 ± 0,09 m
spin7/2
nuclear quadrupole moment
-0,552 ± 0,013
opdagelsesdato1937
Paritet-

decay modeIntensitet
β (β decay)100%

140Ba

mass number140
neutron number84
Relative Atomic Mass
g-factor
0
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
12,7534 ± 0,0021 d
spin0
nuclear quadrupole moment
0
opdagelsesdato1939
Paritet+

decay modeIntensitet
β (β decay)100%

141Ba

mass number141
neutron number85
Relative Atomic Mass
g-factor
-0,22466666666667 ± 0,0033333333333333
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
18,27 ± 0,07 m
spin3/2
nuclear quadrupole moment
0,437 ± 0,01
opdagelsesdato1945
Paritet-

decay modeIntensitet
β (β decay)100%

142Ba

mass number142
neutron number86
Relative Atomic Mass
g-factor
0
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
10,6 ± 0,2 m
spin0
nuclear quadrupole moment
0
opdagelsesdato1959
Paritet+

decay modeIntensitet
β (β decay)100%

143Ba

mass number143
neutron number87
Relative Atomic Mass
g-factor
0,1772 ± 0,0044
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
14,5 ± 0,3 s
spin5/2
nuclear quadrupole moment
-0,85 ± 0,02
opdagelsesdato1962
Paritet-

decay modeIntensitet
β (β decay)100%

144Ba

mass number144
neutron number88
Relative Atomic Mass
g-factor
0
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
11,73 ± 0,08 s
spin0
nuclear quadrupole moment
0
opdagelsesdato1967
Paritet+

decay modeIntensitet
β (β decay)100%

145Ba

mass number145
neutron number89
Relative Atomic Mass
g-factor
-0,114 ± 0,0028
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
4,31 ± 0,16 s
spin5/2
nuclear quadrupole moment
1,18 ± 0,02
opdagelsesdato1974
Paritet-

decay modeIntensitet
β (β decay)100%

146Ba

mass number146
neutron number90
Relative Atomic Mass
g-factor
0
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
2,15 ± 0,04 s
spin0
nuclear quadrupole moment
0
opdagelsesdato1970
Paritet+

decay modeIntensitet
β (β decay)100%

147Ba

mass number147
neutron number91
Relative Atomic Mass
g-factor
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
893 ± 1 ms
spin5/2
nuclear quadrupole moment
opdagelsesdato1978
Paritet-

decay modeIntensitet
β (β decay)100%
β n (β-delayed neutron emission)0.07%

148Ba

mass number148
neutron number92
Relative Atomic Mass
g-factor
0
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
620 ± 5 ms
spin0
nuclear quadrupole moment
0
opdagelsesdato1979
Paritet+

decay modeIntensitet
β (β decay)100%
β n (β-delayed neutron emission)0.4%

149Ba

mass number149
neutron number93
Relative Atomic Mass
g-factor
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
349 ± 4 ms
spin3/2
nuclear quadrupole moment
opdagelsesdato1993
Paritet-

decay modeIntensitet
β (β decay)100%
β n (β-delayed neutron emission)3.9%

150Ba

mass number150
neutron number94
Relative Atomic Mass
g-factor
0
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
258 ± 5 ms
spin0
nuclear quadrupole moment
0
opdagelsesdato1994
Paritet+

decay modeIntensitet
β (β decay)100%
β n (β-delayed neutron emission)1%

151Ba

mass number151
neutron number95
Relative Atomic Mass
g-factor
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
167 ± 5 ms
spin3/2
nuclear quadrupole moment
opdagelsesdato1994
Paritet-

decay modeIntensitet
β (β decay)100%
β n (β-delayed neutron emission)

152Ba

mass number152
neutron number96
Relative Atomic Mass
g-factor
0
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
139 ± 8 ms
spin0
nuclear quadrupole moment
0
opdagelsesdato2010
Paritet+

decay modeIntensitet
β (β decay)100%
β n (β-delayed neutron emission)

153Ba

mass number153
neutron number97
Relative Atomic Mass
g-factor
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
113 ± 39 ms
spin5/2
nuclear quadrupole moment
opdagelsesdato2016
Paritet-

decay modeIntensitet
β (β decay)100%
β n (β-delayed neutron emission)
2n (2-neutron emission)

154Ba

mass number154
neutron number98
Relative Atomic Mass
g-factor
0
natural abundance
radioaktivitet☢️ radioactive element
halveringstid
53 ± 48 ms
spin0
nuclear quadrupole moment
0
opdagelsesdato2017
Paritet+

decay modeIntensitet
β (β decay)100%
Barium 1

historie

opdager eller opfinderSir Humphrey Davy
fundstedEngland
opdagelsesdato1808
etymologiGreek: barys (heavy or dense).
udtaleBAR-i-em (engelsk)

source

Forekomst
Abundance in Earth's crust
natural abundance (verdenshave)
natural abundance (menneskelige krop)
0,00003 %
natural abundance (Meteoroid)
0,00027 %
natural abundance (Solen)
0,000001 %
Abundance in Universe
0,000001 %

Nuclear Screening Constants

1s1.1139
2p4.1904
2s14.7532
3d13.9757
3p18.6836
3s18.8444
4d32.216
4p29.1968
4s28.08
5p41.1995
5s39.3805
6s48.425