Barium

Barium (Ba)

chemical element with symbol Ba and atomic number 56
Atomic Number56
Atomic Weight137.327
Nombor jisim138
Group2
Period6
Blocks
proton56 p+
neutron82 n0
Elektron56 e-
Animated Model Bohr of Ba (Barium)

Sifat Fizikal

Jejari Atom
215 pm
molar volume
Jejari kovalen
196 pm
Metallic Radius
198 pm
ionic radius
135 pm
Crystal Radius
149 pm
Jejari van der Waals
268 pm
ketumpatan
3.62 g/cm³
Atomic Radii Of The Elements: Barium0102030405060708090100110120130140150160170180190200210220230240250260270pmJejari AtomJejari KovalenMetallic RadiusJejari van der Waals

Sifat Kimia

tenaga
proton affinity
Pertalian elektron
0.14462 eV/particle
ionization energy
5.211664 eV/particle
ionization energy of Ba (Barium)
Entalpi pengewapan
142 kJ/mol
entalpi pelakuran
7.66 kJ/mol
standard enthalpy of formation
179.1 kJ/mol
Elektron
Petala elektron2, 8, 18, 18, 8, 2
Model Bohr: Ba (Barium)
Elektron valens2
Teori ion Lewis: Ba (Barium)
tatarajah elektron[Xe] 6s2
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2
Enhanced Model Bohr of Ba (Barium)
Orbital Diagram of Ba (Barium)
Keadaan pengoksidaan1, 2
Keelektronegatifan
0.89
Electrophilicity Index
0.7077543210759566 eV/particle
keadaan jirim asas
fasa jirimSolid
gaseous state of matter
Boiling Point
2,118.15 K
Melting Point
1,000.15 K
critical pressure
critical temperature
triple point
rupa
warna
Silver
rupa
indeks biasan
sifat bahan
Thermal Conductivity
Pengembangan terma
0.0000206 1/K
molar heat capacity
28.07 J/(mol K)
Specific Heat Capacity
0.204 J/(g⋅K)
heat capacity ratio
electrical properties
typeConductor
Kekonduksian elektrik
2.9 MS/m
Kerintangan dan kekonduksian elektrik
0.00000035 m Ω
Kesuperkonduksian
kemagnetan
typeparamagnetic
magnetic susceptibility (Mass)
0.0000000113 m³/Kg
magnetic susceptibility (Molar)
0.000000001552 m³/mol
magnetic susceptibility (Volume)
0.00003966
magnetic ordering
Suhu Curie
Néel temperature
struktur
Crystal StructureBody Centered Cubic (BCC)
lattice constant
5.02 Å
Lattice Anglesπ/2, π/2, π/2
mechanical property
hardness
1.25 MPa
Modulus pukal
9.6 GPa
shear modulus
4.9 GPa
Young's modulus
13 GPa
Nisbah Poisson
Kelajuan bunyi
1,620 m/s
pengelasan
CategoryAlkaline earth metals, Alkaline earth metals
CAS GroupIIA
IUPAC GroupIIA
Glawe Number14
Mendeleev Number9
Pettifor Number14
Geochemical Classalkaline earth metal
Goldschmidt classificationlitophile

other

Gas Basicity
polarizability
272 ± 10 a₀
C6 Dispersion Coefficient
allotrope
Neutron cross section
1.3
Neutron Mass Absorption
0.00027
Nombor kuantum1S0
space group229 (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

Nombor jisim113
nombor neutron57
jisim atom relatif
112.95737 ± 0.000322 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
Spin5/2
nuclear quadrupole moment
tarikh penemuan
parity+

decay modeKeamatan (fizik)
p (proton emission)
α (α emission)

114Ba

Nombor jisim114
nombor neutron58
jisim atom relatif
113.950718489 ± 0.000110227 Da
g-factor
0
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
460 ± 125 ms
Spin0
nuclear quadrupole moment
0
tarikh penemuan1995
parity+

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

115Ba

Nombor jisim115
nombor neutron59
jisim atom relatif
114.947482 ± 0.000215 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
450 ± 50 ms
Spin5/2
nuclear quadrupole moment
tarikh penemuan1997
parity+

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

116Ba

Nombor jisim116
nombor neutron60
jisim atom relatif
115.941621 ± 0.000215 Da
g-factor
0
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
1.3 ± 0.2 s
Spin0
nuclear quadrupole moment
0
tarikh penemuan1997
parity+

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

117Ba

Nombor jisim117
nombor neutron61
jisim atom relatif
116.938316403 ± 0.000268749 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
1.75 ± 0.07 s
Spin3/2
nuclear quadrupole moment
tarikh penemuan1977
parity+

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

118Ba

Nombor jisim118
nombor neutron62
jisim atom relatif
117.933226 ± 0.000215 Da
g-factor
0
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
5.2 ± 0.2 s
Spin0
nuclear quadrupole moment
0
tarikh penemuan1997
parity+

decay modeKeamatan (fizik)
β+ (β+ decay; β+ = ϵ + e+)100%

119Ba

Nombor jisim119
nombor neutron63
jisim atom relatif
118.930659683 ± 0.000214997 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
5.4 ± 0.3 s
Spin5/2
nuclear quadrupole moment
tarikh penemuan1974
parity+

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

120Ba

Nombor jisim120
nombor neutron64
jisim atom relatif
119.926044997 ± 0.000322241 Da
g-factor
0
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
24 ± 2 s
Spin0
nuclear quadrupole moment
0
tarikh penemuan1974
parity+

decay modeKeamatan (fizik)
β+ (β+ decay; β+ = ϵ + e+)100%

121Ba

Nombor jisim121
nombor neutron65
jisim atom relatif
120.924052286 ± 0.000152333 Da
g-factor
0.264 ± 0.0004
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
29.7 ± 1.5 s
Spin5/2
nuclear quadrupole moment
1.89 ± 0.13
tarikh penemuan1975
parity+

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

122Ba

Nombor jisim122
nombor neutron66
jisim atom relatif
121.919904 ± 0.00003 Da
g-factor
0
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
1.95 ± 0.15 m
Spin0
nuclear quadrupole moment
0
tarikh penemuan1974
parity+

decay modeKeamatan (fizik)
β+ (β+ decay; β+ = ϵ + e+)100%

123Ba

Nombor jisim123
nombor neutron67
jisim atom relatif
122.91878106 ± 0.000013 Da
g-factor
-0.272 ± 0.0004
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
2.7 ± 0.4 m
Spin5/2
nuclear quadrupole moment
1.57 ± 0.13
tarikh penemuan1962
parity+

decay modeKeamatan (fizik)
β+ (β+ decay; β+ = ϵ + e+)100%

124Ba

Nombor jisim124
nombor neutron68
jisim atom relatif
123.915093627 ± 0.000013416 Da
g-factor
0
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
11 ± 0.5 m
Spin0
nuclear quadrupole moment
0
tarikh penemuan1967
parity+

decay modeKeamatan (fizik)
β+ (β+ decay; β+ = ϵ + e+)100%

125Ba

Nombor jisim125
nombor neutron69
jisim atom relatif
124.91447184 ± 0.0000118 Da
g-factor
0.354 ± 0.024
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
3.3 ± 0.3 m
Spin1/2
nuclear quadrupole moment
0
tarikh penemuan1968
parity+

decay modeKeamatan (fizik)
β+ (β+ decay; β+ = ϵ + e+)100%

126Ba

Nombor jisim126
nombor neutron70
jisim atom relatif
125.911250202 ± 0.000013416 Da
g-factor
0
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
100 ± 2 m
Spin0
nuclear quadrupole moment
0
tarikh penemuan1954
parity+

decay modeKeamatan (fizik)
β+ (β+ decay; β+ = ϵ + e+)100%

127Ba

Nombor jisim127
nombor neutron71
jisim atom relatif
126.911091272 ± 0.000012192 Da
g-factor
0.1668 ± 0.002
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
12.7 ± 0.4 m
Spin1/2
nuclear quadrupole moment
0
tarikh penemuan1952
parity+

decay modeKeamatan (fizik)
β+ (β+ decay; β+ = ϵ + e+)100%

128Ba

Nombor jisim128
nombor neutron72
jisim atom relatif
127.908352446 ± 0.000001728 Da
g-factor
0
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
2.43 ± 0.05 d
Spin0
nuclear quadrupole moment
0
tarikh penemuan1950
parity+

decay modeKeamatan (fizik)
ϵ (electron capture)100%

129Ba

Nombor jisim129
nombor neutron73
jisim atom relatif
128.908683409 ± 0.000011276 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
2.23 ± 0.11 h
Spin1/2
nuclear quadrupole moment
0
tarikh penemuan1950
parity+

decay modeKeamatan (fizik)
β+ (β+ decay; β+ = ϵ + e+)100%

130Ba

Nombor jisim130
nombor neutron74
jisim atom relatif
129.906326002 ± 0.000000308 Da
g-factor
0
natural abundance
0.11 ± 0.01
Reputan radioaktif☢️ radioactive element
setengah hayat
Spin0
nuclear quadrupole moment
0
tarikh penemuan1936
parity+

decay modeKeamatan (fizik)
+ (double β+ decay)

131Ba

Nombor jisim131
nombor neutron75
jisim atom relatif
130.906946315 ± 0.000000445 Da
g-factor
1.4166 ± 0.0004
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
11.52 ± 0.01 d
Spin1/2
nuclear quadrupole moment
0
tarikh penemuan1947
parity+

decay modeKeamatan (fizik)
β+ (β+ decay; β+ = ϵ + e+)100%

132Ba

Nombor jisim132
nombor neutron76
jisim atom relatif
131.905061231 ± 0.00000113 Da
g-factor
0
natural abundance
0.1 ± 0.01
Reputan radioaktif☢️ radioactive element
setengah hayat
Spin0
nuclear quadrupole moment
0
tarikh penemuan1936
parity+

decay modeKeamatan (fizik)
+ (double β+ decay)

133Ba

Nombor jisim133
nombor neutron77
jisim atom relatif
132.906007443 ± 0.000001065 Da
g-factor
1.5438 ± 0.0004
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
10.5379 ± 0.0016 y
Spin1/2
nuclear quadrupole moment
0
tarikh penemuan1941
parity+

decay modeKeamatan (fizik)
ϵ (electron capture)100%

134Ba

Nombor jisim134
nombor neutron78
jisim atom relatif
133.904508249 ± 0.000000269 Da
g-factor
0
natural abundance
2.42 ± 0.15
Reputan radioaktifIsotop stabil
setengah hayatNot Radioactive ☢️
Spin0
nuclear quadrupole moment
0
tarikh penemuan1936
parity+

135Ba

Nombor jisim135
nombor neutron79
jisim atom relatif
134.905688447 ± 0.000000263 Da
g-factor
0.55873333333333 ± 0.00013333333333333
natural abundance
6.59 ± 0.1
Reputan radioaktifIsotop stabil
setengah hayatNot Radioactive ☢️
Spin3/2
nuclear quadrupole moment
0.153 ± 0.002
tarikh penemuan1932
parity+

136Ba

Nombor jisim136
nombor neutron80
jisim atom relatif
135.9045758 ± 0.000000262 Da
g-factor
0
natural abundance
7.85 ± 0.24
Reputan radioaktifIsotop stabil
setengah hayatNot Radioactive ☢️
Spin0
nuclear quadrupole moment
0
tarikh penemuan1932
parity+

137Ba

Nombor jisim137
nombor neutron81
jisim atom relatif
136.905827207 ± 0.000000266 Da
g-factor
0.625 ± 0.00013333333333333
natural abundance
11.23 ± 0.23
Reputan radioaktifIsotop stabil
setengah hayatNot Radioactive ☢️
Spin3/2
nuclear quadrupole moment
0.236 ± 0.003
tarikh penemuan1932
parity+

138Ba

Nombor jisim138
nombor neutron82
jisim atom relatif
137.905247059 ± 0.000000267 Da
g-factor
0
natural abundance
71.7 ± 0.29
Reputan radioaktifIsotop stabil
setengah hayatNot Radioactive ☢️
Spin0
nuclear quadrupole moment
0
tarikh penemuan1925
parity+

139Ba

Nombor jisim139
nombor neutron83
jisim atom relatif
138.908841164 ± 0.000000271 Da
g-factor
-0.278 ± 0.0014285714285714
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
82.93 ± 0.09 m
Spin7/2
nuclear quadrupole moment
-0.552 ± 0.013
tarikh penemuan1937
parity-

decay modeKeamatan (fizik)
β (β decay)100%

140Ba

Nombor jisim140
nombor neutron84
jisim atom relatif
139.910608231 ± 0.00000848 Da
g-factor
0
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
12.7534 ± 0.0021 d
Spin0
nuclear quadrupole moment
0
tarikh penemuan1939
parity+

decay modeKeamatan (fizik)
β (β decay)100%

141Ba

Nombor jisim141
nombor neutron85
jisim atom relatif
140.914403653 ± 0.000005709 Da
g-factor
-0.22466666666667 ± 0.0033333333333333
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
18.27 ± 0.07 m
Spin3/2
nuclear quadrupole moment
0.437 ± 0.01
tarikh penemuan1945
parity-

decay modeKeamatan (fizik)
β (β decay)100%

142Ba

Nombor jisim142
nombor neutron86
jisim atom relatif
141.916432904 ± 0.000006355 Da
g-factor
0
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
10.6 ± 0.2 m
Spin0
nuclear quadrupole moment
0
tarikh penemuan1959
parity+

decay modeKeamatan (fizik)
β (β decay)100%

143Ba

Nombor jisim143
nombor neutron87
jisim atom relatif
142.920625149 ± 0.000007253 Da
g-factor
0.1772 ± 0.0044
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
14.5 ± 0.3 s
Spin5/2
nuclear quadrupole moment
-0.85 ± 0.02
tarikh penemuan1962
parity-

decay modeKeamatan (fizik)
β (β decay)100%

144Ba

Nombor jisim144
nombor neutron88
jisim atom relatif
143.922954821 ± 0.000007661 Da
g-factor
0
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
11.73 ± 0.08 s
Spin0
nuclear quadrupole moment
0
tarikh penemuan1967
parity+

decay modeKeamatan (fizik)
β (β decay)100%

145Ba

Nombor jisim145
nombor neutron89
jisim atom relatif
144.9275184 ± 0.0000091 Da
g-factor
-0.114 ± 0.0028
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
4.31 ± 0.16 s
Spin5/2
nuclear quadrupole moment
1.18 ± 0.02
tarikh penemuan1974
parity-

decay modeKeamatan (fizik)
β (β decay)100%

146Ba

Nombor jisim146
nombor neutron90
jisim atom relatif
145.9303632 ± 0.0000019 Da
g-factor
0
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
2.15 ± 0.04 s
Spin0
nuclear quadrupole moment
0
tarikh penemuan1970
parity+

decay modeKeamatan (fizik)
β (β decay)100%

147Ba

Nombor jisim147
nombor neutron91
jisim atom relatif
146.9353039 ± 0.0000212 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
893 ± 1 ms
Spin5/2
nuclear quadrupole moment
tarikh penemuan1978
parity-

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

148Ba

Nombor jisim148
nombor neutron92
jisim atom relatif
147.938223 ± 0.0000016 Da
g-factor
0
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
620 ± 5 ms
Spin0
nuclear quadrupole moment
0
tarikh penemuan1979
parity+

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

149Ba

Nombor jisim149
nombor neutron93
jisim atom relatif
148.943284 ± 0.0000027 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
349 ± 4 ms
Spin3/2
nuclear quadrupole moment
tarikh penemuan1993
parity-

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

150Ba

Nombor jisim150
nombor neutron94
jisim atom relatif
149.9464411 ± 0.0000061 Da
g-factor
0
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
258 ± 5 ms
Spin0
nuclear quadrupole moment
0
tarikh penemuan1994
parity+

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

151Ba

Nombor jisim151
nombor neutron95
jisim atom relatif
150.951755 ± 0.000429 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
167 ± 5 ms
Spin3/2
nuclear quadrupole moment
tarikh penemuan1994
parity-

decay modeKeamatan (fizik)
β (β decay)100%
β n (β-delayed neutron emission)

152Ba

Nombor jisim152
nombor neutron96
jisim atom relatif
151.95533 ± 0.000429 Da
g-factor
0
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
139 ± 8 ms
Spin0
nuclear quadrupole moment
0
tarikh penemuan2010
parity+

decay modeKeamatan (fizik)
β (β decay)100%
β n (β-delayed neutron emission)

153Ba

Nombor jisim153
nombor neutron97
jisim atom relatif
152.960848 ± 0.000429 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
113 ± 39 ms
Spin5/2
nuclear quadrupole moment
tarikh penemuan2016
parity-

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

154Ba

Nombor jisim154
nombor neutron98
jisim atom relatif
153.964659 ± 0.000537 Da
g-factor
0
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
53 ± 48 ms
Spin0
nuclear quadrupole moment
0
tarikh penemuan2017
parity+

decay modeKeamatan (fizik)
β (β decay)100%
Barium 1

sejarah

penemu atau perekaSir Humphrey Davy
tempat penemuanEngland
tarikh penemuan1808
EtimologiGreek: barys (heavy or dense).
sebutanBAR-i-em (Inggeris)

sumber

Abundance
Abundance in Earth's crust
425 mg/kg
natural abundance (lautan)
0.013 mg/L
natural abundance (Tubuh manusia)
0.00003 %
natural abundance (Meteoroid)
0.00027 %
natural abundance (Matahari)
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