Bari (Ba)

chemical element with symbol Ba and atomic number 56

Atomic Number	56
Atomic Weight	137.327
Rhif màs	138

Group	2
Period	6
Block	s

Proton	56 p⁺
Niwtron	82 n⁰
Electron	56 e^-

Nodwedd Ffisegol

Atomic Radius	215 pm 293 pm
molar volume	39 cm³/mol
covalent radius	196 pm 161 pm 149 pm 210 pm 215 pm
Metallic Radius	198 pm 222 pm
ionic radius	135 pm 138 pm 142 pm 147 pm 152 pm 157 pm 161 pm
Crystal Radius	149 pm 152 pm 156 pm 161 pm 166 pm 171 pm 175 pm
Van der Waals radius	270 pm 268 pm 307 pm 268 pm 370.3 pm
density	3.62 g/cm³ 3,338 kg/m³

Nodwedd Gemegol

{ERROR}

egni

proton affinity
electron affinity	0.14462 eV/particle
ionization energy	5.211664 eV/particle 10.003826 eV/particle 35.84 eV/particle 47.03 eV/particle 58 eV/particle 71 eV/particle 86 eV/particle 101 eV/particle 130.53 eV/particle 146.52 eV/particle 241 eV/particle 267.1 eV/particle 296 eV/particle 325 eV/particle 354 eV/particle 390 eV/particle 422 eV/particle 455 eV/particle 488 eV/particle 520 eV/particle 646 eV/particle 679 eV/particle 717 eV/particle 752 eV/particle 809 eV/particle 846 eV/particle 935 eV/particle 976.6 eV/particle 1,695 eV/particle 1,776 eV/particle 1,864 eV/particle 1,958 eV/particle 2,047 eV/particle 2,142 eV/particle 2,256 eV/particle 2,349 eV/particle 2,452 eV/particle 2,547 eV/particle 2,814 eV/particle 2,901 eV/particle 2,994 eV/particle 3,081 eV/particle 3,266 eV/particle 3,363 eV/particle 3,550 eV/particle 3,640 eV/particle 8,326 eV/particle 8,565 eV/particle 8,831 eV/particle 9,077 eV/particle 9,739 eV/particle 10,023 eV/particle 10,376 eV/particle 10,616.42 eV/particle 43,485.364 eV/particle 44,561.47 eV/particle

enthalpy of vaporization	142 kJ/mol
enthalpy of fusion	7.66 kJ/mol
standard enthalpy of formation	179.1 kJ/mol
Electron

plisgyn yr electron	2, 8, 18, 18, 8, 2

valence electron	2 ⓘ

trefn yr electronnau	[Xe] 6s²ⓘ 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s²

Cyflwr ocsidiad	1, 2
Electronegatifedd	5.211 eV/particle 0.1586786 0.89
Electrophilicity Index	0.7077543210759566 eV/particle
cyflwr sylfaenol mater

cyflwr mater
gaseous state of matter
Boiling Point	2,118.15 K
Melting Point	1,000.15 K
critical pressure
critical temperature
triple point
appearance
lliw	Black #ffa500 #00c900 #00c900
appearance
Mynegrif plygiant
nodwedd ffisegol gwrthrych
Thermal Conductivity
thermal expansion	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
type	Conductor
dargludedd trydanol	2.9 MS/m
Gwrthedd	0.00000035 Ω*m
superconductivity
magnetism
type	paramagnetic
magnetic susceptibility (Mass)	0.0000000113 m³/Kg
magnetic susceptibility (Molar)	0.000000001552 m³/mol
magnetic susceptibility (Volume)	0.00003966
magnetic ordering
Curie temperature
Néel temperature
strwythur
Crystal Structure	{ERROR}
lattice constant	5.02 Å
Lattice Angles	π/2, π/2, π/2
nodwedd mecanyddol deunyddiau
hardness	1.25 MPa
bulk modulus	9.6 GPa
shear modulus	4.9 GPa
Young's modulus	13 GPa
Poisson's ratio
speed of sound	1,620 m/s
classification
Category	Actinides, Alkaline earth metals
CAS Group	IIA
IUPAC Group	IIA
Glawe Number	14
Mendeleev Number	9
Pettifor Number	14
Geochemical Class	alkaline earth metal
Goldschmidt classification	litophile

other

Gas Basicity
polarizability	272 ± 10 a₀
C6 Dispersion Coefficient	5,540 a₀
allotrope
Neutron cross section	1.3
Neutron Mass Absorption	0.00027
quantum number	1S0
space group	229 (Im_3m)

Isotopes of Barium

Stable Isotopes	5
Unstable Isotopes	37
Natural Isotopes	7

¹¹³Ba

Rhif màs	113
neutron number	57
Relative Atomic Mass	112.95737 ± 0.000322 Da
g-factor
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes
spin	5/2
nuclear quadrupole moment
dyddiad darganfod
parity	+

decay mode	intensity
p (proton emission)
α (α emission)

¹¹⁴Ba

Rhif màs	114
neutron number	58
Relative Atomic Mass	113.950718489 ± 0.000110227 Da
g-factor	0
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	460 ± 125 ms
spin	0
nuclear quadrupole moment	0
dyddiad darganfod	1995
parity	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%
β⁺ p (β⁺-delayed proton emission)	20%
α (α emission)	0.9%
12C	0.0034%

¹¹⁵Ba

Rhif màs	115
neutron number	59
Relative Atomic Mass	114.947482 ± 0.000215 Da
g-factor
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	450 ± 50 ms
spin	5/2
nuclear quadrupole moment
dyddiad darganfod	1997
parity	+

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

¹¹⁶Ba

Rhif màs	116
neutron number	60
Relative Atomic Mass	115.941621 ± 0.000215 Da
g-factor	0
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	1.3 ± 0.2 s
spin	0
nuclear quadrupole moment	0
dyddiad darganfod	1997
parity	+

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

¹¹⁷Ba

Rhif màs	117
neutron number	61
Relative Atomic Mass	116.938316403 ± 0.000268749 Da
g-factor
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	1.75 ± 0.07 s
spin	3/2
nuclear quadrupole moment
dyddiad darganfod	1977
parity	+

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

¹¹⁸Ba

Rhif màs	118
neutron number	62
Relative Atomic Mass	117.933226 ± 0.000215 Da
g-factor	0
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	5.2 ± 0.2 s
spin	0
nuclear quadrupole moment	0
dyddiad darganfod	1997
parity	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

¹¹⁹Ba

Rhif màs	119
neutron number	63
Relative Atomic Mass	118.930659683 ± 0.000214997 Da
g-factor
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	5.4 ± 0.3 s
spin	5/2
nuclear quadrupole moment
dyddiad darganfod	1974
parity	+

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

¹²⁰Ba

Rhif màs	120
neutron number	64
Relative Atomic Mass	119.926044997 ± 0.000322241 Da
g-factor	0
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	24 ± 2 s
spin	0
nuclear quadrupole moment	0
dyddiad darganfod	1974
parity	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

¹²¹Ba

Rhif màs	121
neutron number	65
Relative Atomic Mass	120.924052286 ± 0.000152333 Da
g-factor	0.264 ± 0.0004
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	29.7 ± 1.5 s
spin	5/2
nuclear quadrupole moment	1.89 ± 0.13
dyddiad darganfod	1975
parity	+

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

¹²²Ba

Rhif màs	122
neutron number	66
Relative Atomic Mass	121.919904 ± 0.00003 Da
g-factor	0
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	1.95 ± 0.15 m
spin	0
nuclear quadrupole moment	0
dyddiad darganfod	1974
parity	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

¹²³Ba

Rhif màs	123
neutron number	67
Relative Atomic Mass	122.91878106 ± 0.000013 Da
g-factor	-0.272 ± 0.0004
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	2.7 ± 0.4 m
spin	5/2
nuclear quadrupole moment	1.57 ± 0.13
dyddiad darganfod	1962
parity	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

¹²⁴Ba

Rhif màs	124
neutron number	68
Relative Atomic Mass	123.915093627 ± 0.000013416 Da
g-factor	0
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	11 ± 0.5 m
spin	0
nuclear quadrupole moment	0
dyddiad darganfod	1967
parity	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

¹²⁵Ba

Rhif màs	125
neutron number	69
Relative Atomic Mass	124.91447184 ± 0.0000118 Da
g-factor	0.354 ± 0.024
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	3.3 ± 0.3 m
spin	1/2
nuclear quadrupole moment	0
dyddiad darganfod	1968
parity	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

¹²⁶Ba

Rhif màs	126
neutron number	70
Relative Atomic Mass	125.911250202 ± 0.000013416 Da
g-factor	0
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	100 ± 2 m
spin	0
nuclear quadrupole moment	0
dyddiad darganfod	1954
parity	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

¹²⁷Ba

Rhif màs	127
neutron number	71
Relative Atomic Mass	126.911091272 ± 0.000012192 Da
g-factor	0.1668 ± 0.002
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	12.7 ± 0.4 m
spin	1/2
nuclear quadrupole moment	0
dyddiad darganfod	1952
parity	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

¹²⁸Ba

Rhif màs	128
neutron number	72
Relative Atomic Mass	127.908352446 ± 0.000001728 Da
g-factor	0
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	2.43 ± 0.05 d
spin	0
nuclear quadrupole moment	0
dyddiad darganfod	1950
parity	+

decay mode	intensity
ϵ (electron capture)	100%

¹²⁹Ba

Rhif màs	129
neutron number	73
Relative Atomic Mass	128.908683409 ± 0.000011276 Da
g-factor
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	2.23 ± 0.11 h
spin	1/2
nuclear quadrupole moment	0
dyddiad darganfod	1950
parity	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

¹³⁰Ba

Rhif màs	130
neutron number	74
Relative Atomic Mass	129.906326002 ± 0.000000308 Da
g-factor	0
natural abundance	0.11 ± 0.01
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes
spin	0
nuclear quadrupole moment	0
dyddiad darganfod	1936
parity	+

decay mode	intensity
2β⁺ (double β⁺ decay)

¹³¹Ba

Rhif màs	131
neutron number	75
Relative Atomic Mass	130.906946315 ± 0.000000445 Da
g-factor	1.4166 ± 0.0004
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	11.52 ± 0.01 d
spin	1/2
nuclear quadrupole moment	0
dyddiad darganfod	1947
parity	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

¹³²Ba

Rhif màs	132
neutron number	76
Relative Atomic Mass	131.905061231 ± 0.00000113 Da
g-factor	0
natural abundance	0.1 ± 0.01
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes
spin	0
nuclear quadrupole moment	0
dyddiad darganfod	1936
parity	+

decay mode	intensity
2β⁺ (double β⁺ decay)

¹³³Ba

Rhif màs	133
neutron number	77
Relative Atomic Mass	132.906007443 ± 0.000001065 Da
g-factor	1.5438 ± 0.0004
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	10.5379 ± 0.0016 y
spin	1/2
nuclear quadrupole moment	0
dyddiad darganfod	1941
parity	+

decay mode	intensity
ϵ (electron capture)	100%

¹³⁴Ba

Rhif màs	134
neutron number	78
Relative Atomic Mass	133.904508249 ± 0.000000269 Da
g-factor	0
natural abundance	2.42 ± 0.15
Dadfeilio ymbelydrol	stable isotope
Hanner oes	Not Radioactive ☢️
spin	0
nuclear quadrupole moment	0
dyddiad darganfod	1936
parity	+

¹³⁵Ba

Rhif màs	135
neutron number	79
Relative Atomic Mass	134.905688447 ± 0.000000263 Da
g-factor	0.55873333333333 ± 0.00013333333333333
natural abundance	6.59 ± 0.1
Dadfeilio ymbelydrol	stable isotope
Hanner oes	Not Radioactive ☢️
spin	3/2
nuclear quadrupole moment	0.153 ± 0.002
dyddiad darganfod	1932
parity	+

¹³⁶Ba

Rhif màs	136
neutron number	80
Relative Atomic Mass	135.9045758 ± 0.000000262 Da
g-factor	0
natural abundance	7.85 ± 0.24
Dadfeilio ymbelydrol	stable isotope
Hanner oes	Not Radioactive ☢️
spin	0
nuclear quadrupole moment	0
dyddiad darganfod	1932
parity	+

¹³⁷Ba

Rhif màs	137
neutron number	81
Relative Atomic Mass	136.905827207 ± 0.000000266 Da
g-factor	0.625 ± 0.00013333333333333
natural abundance	11.23 ± 0.23
Dadfeilio ymbelydrol	stable isotope
Hanner oes	Not Radioactive ☢️
spin	3/2
nuclear quadrupole moment	0.236 ± 0.003
dyddiad darganfod	1932
parity	+

¹³⁸Ba

Rhif màs	138
neutron number	82
Relative Atomic Mass	137.905247059 ± 0.000000267 Da
g-factor	0
natural abundance	71.7 ± 0.29
Dadfeilio ymbelydrol	stable isotope
Hanner oes	Not Radioactive ☢️
spin	0
nuclear quadrupole moment	0
dyddiad darganfod	1925
parity	+

¹³⁹Ba

Rhif màs	139
neutron number	83
Relative Atomic Mass	138.908841164 ± 0.000000271 Da
g-factor	-0.278 ± 0.0014285714285714
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	82.93 ± 0.09 m
spin	7/2
nuclear quadrupole moment	-0.552 ± 0.013
dyddiad darganfod	1937
parity	-

decay mode	intensity
β⁻ (β⁻ decay)	100%

¹⁴⁰Ba

Rhif màs	140
neutron number	84
Relative Atomic Mass	139.910608231 ± 0.00000848 Da
g-factor	0
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	12.7534 ± 0.0021 d
spin	0
nuclear quadrupole moment	0
dyddiad darganfod	1939
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%

¹⁴¹Ba

Rhif màs	141
neutron number	85
Relative Atomic Mass	140.914403653 ± 0.000005709 Da
g-factor	-0.22466666666667 ± 0.0033333333333333
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	18.27 ± 0.07 m
spin	3/2
nuclear quadrupole moment	0.437 ± 0.01
dyddiad darganfod	1945
parity	-

decay mode	intensity
β⁻ (β⁻ decay)	100%

¹⁴²Ba

Rhif màs	142
neutron number	86
Relative Atomic Mass	141.916432904 ± 0.000006355 Da
g-factor	0
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	10.6 ± 0.2 m
spin	0
nuclear quadrupole moment	0
dyddiad darganfod	1959
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%

¹⁴³Ba

Rhif màs	143
neutron number	87
Relative Atomic Mass	142.920625149 ± 0.000007253 Da
g-factor	0.1772 ± 0.0044
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	14.5 ± 0.3 s
spin	5/2
nuclear quadrupole moment	-0.85 ± 0.02
dyddiad darganfod	1962
parity	-

decay mode	intensity
β⁻ (β⁻ decay)	100%

¹⁴⁴Ba

Rhif màs	144
neutron number	88
Relative Atomic Mass	143.922954821 ± 0.000007661 Da
g-factor	0
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	11.73 ± 0.08 s
spin	0
nuclear quadrupole moment	0
dyddiad darganfod	1967
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%

¹⁴⁵Ba

Rhif màs	145
neutron number	89
Relative Atomic Mass	144.9275184 ± 0.0000091 Da
g-factor	-0.114 ± 0.0028
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	4.31 ± 0.16 s
spin	5/2
nuclear quadrupole moment	1.18 ± 0.02
dyddiad darganfod	1974
parity	-

decay mode	intensity
β⁻ (β⁻ decay)	100%

¹⁴⁶Ba

Rhif màs	146
neutron number	90
Relative Atomic Mass	145.9303632 ± 0.0000019 Da
g-factor	0
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	2.15 ± 0.04 s
spin	0
nuclear quadrupole moment	0
dyddiad darganfod	1970
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%

¹⁴⁷Ba

Rhif màs	147
neutron number	91
Relative Atomic Mass	146.9353039 ± 0.0000212 Da
g-factor
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	893 ± 1 ms
spin	5/2
nuclear quadrupole moment
dyddiad darganfod	1978
parity	-

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	0.07%

¹⁴⁸Ba

Rhif màs	148
neutron number	92
Relative Atomic Mass	147.938223 ± 0.0000016 Da
g-factor	0
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	620 ± 5 ms
spin	0
nuclear quadrupole moment	0
dyddiad darganfod	1979
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	0.4%

¹⁴⁹Ba

Rhif màs	149
neutron number	93
Relative Atomic Mass	148.943284 ± 0.0000027 Da
g-factor
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	349 ± 4 ms
spin	3/2
nuclear quadrupole moment
dyddiad darganfod	1993
parity	-

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	3.9%

¹⁵⁰Ba

Rhif màs	150
neutron number	94
Relative Atomic Mass	149.9464411 ± 0.0000061 Da
g-factor	0
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	258 ± 5 ms
spin	0
nuclear quadrupole moment	0
dyddiad darganfod	1994
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	1%

¹⁵¹Ba

Rhif màs	151
neutron number	95
Relative Atomic Mass	150.951755 ± 0.000429 Da
g-factor
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	167 ± 5 ms
spin	3/2
nuclear quadrupole moment
dyddiad darganfod	1994
parity	-

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)

¹⁵²Ba

Rhif màs	152
neutron number	96
Relative Atomic Mass	151.95533 ± 0.000429 Da
g-factor	0
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	139 ± 8 ms
spin	0
nuclear quadrupole moment	0
dyddiad darganfod	2010
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)

¹⁵³Ba

Rhif màs	153
neutron number	97
Relative Atomic Mass	152.960848 ± 0.000429 Da
g-factor
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	113 ± 39 ms
spin	5/2
nuclear quadrupole moment
dyddiad darganfod	2016
parity	-

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)
2n (2-neutron emission)

¹⁵⁴Ba

Rhif màs	154
neutron number	98
Relative Atomic Mass	153.964659 ± 0.000537 Da
g-factor	0
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	53 ± 48 ms
spin	0
nuclear quadrupole moment	0
dyddiad darganfod	2017
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%

hanes

darganfyddwr neu ddyfeisiwr	Sir Humphrey Davy
man darganfod	England
dyddiad darganfod	1808
geirdarddiad	Greek: barys (heavy or dense).
ynganiad	BAR-i-em (Saesneg)

source

Abundance
Abundance in Earth's crust	425 mg/kg
natural abundance (cefnfor)	0.013 mg/L
natural abundance (corff dynol)	0.00003 %
natural abundance (Awyrfaen)	0.00027 %
natural abundance (Haul)	0.000001 %
Abundance in Universe	0.000001 %

Nuclear Screening Constants

1	s	1.1139
2	p	4.1904
2	s	14.7532
3	d	13.9757
3	p	18.6836
3	s	18.8444
4	d	32.216
4	p	29.1968
4	s	28.08
5	p	41.1995
5	s	39.3805
6	s	48.425

Bari on ChemicalAid

Bari (Ba)

Nodwedd Ffisegol

Nodwedd Gemegol

other

Isotopes of Barium

113Ba

114Ba

115Ba

116Ba

117Ba

118Ba

119Ba

120Ba

121Ba

122Ba

123Ba

124Ba

125Ba

126Ba

127Ba

128Ba

129Ba

130Ba

131Ba

132Ba

133Ba

134Ba

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136Ba

137Ba

138Ba

139Ba

140Ba

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143Ba

144Ba

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147Ba

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149Ba

150Ba

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source

Nuclear Screening Constants

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