Senun

Senun (Xe)

chemical element with atomic number of 54 and heaviest stable noble gas
Atomic Number54
Atomic Weight131.293
mass number132
Group18
Period5
Blockp
Prutun54 p+
Niwtrun78 n0
Iliktrun54 e-
Animated Bohr model of Xe (Senun)

Physical Property

Atomic Radius
molar volume
covalent radius
131 pm
Metallic Radius
ionic radius
40 pm
Crystal Radius
54 pm
Van der Waals radius
216 pm
density
0.005366 g/cm³

Chemical Property

micha
proton affinity
499.6 kJ/mol
electron affinity
ionization energy
12.1298431 eV/particle
ionization energy of Xe (Senun)
enthalpy of vaporization
12.65 kJ/mol
enthalpy of fusion
standard enthalpy of formation
Iliktrun
Iñuku hawa2, 8, 18, 18, 8
Bohr model: Xe (Senun)
valence electron8
Lewis structure: Xe (Senun)
electron configuration[Kr] 4d10 5s2 5p6
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 4d10 5s2 5p6
Enhanced Bohr model of Xe (Senun)
Orbital Diagram of Xe (Senun)
oxidation number0, 2, 4, 6, 8
electronegativity
2.6
Electrophilicity Index
1.4953590614035728 eV/particle
fundamental state of matter
phase of matterGas
gaseous state of matterMonoatomic
Boiling Point
165.051 K
Melting Point
161.4 K
critical pressure
5.842 MPa
critical temperature
289.733 K
triple point
161.405 K
81.77 kPa
appearance
Llimphi
Colorless
appearancecolorless gas, exhibiting a blue glow when placed in a high voltage electric field
refractive index
1.000702
thermodynamic material property
Thermal Conductivity
0.0057 W/(m K)
thermal expansion
molar heat capacity
20.786 J/(mol K)
Specific Heat Capacity
0.158 J/(g⋅K)
heat capacity ratio5/3
electrical properties
type
electrical conductivity
electrical resistivity
superconductivity
Llut'ariy
typediamagnetic
magnetic susceptibility (Mass)
-0.0000000043 m³/Kg
magnetic susceptibility (Molar)
-0.000000000565 m³/mol
magnetic susceptibility (Volume)
-0.0000000254
magnetic ordering
Curie temperature
Néel temperature
Pawa
Crystal StructureFace Centered Cubic (FCC)
lattice constant
6.2 Å
Lattice Anglesπ/2, π/2, π/2
mechanical property
hardness
bulk modulus
shear modulus
Young's modulus
Poisson's ratio
speed of sound
1,090 m/s
classification
CategoryNoble gases, Noble gases
CAS GroupVIII
IUPAC GroupVIIIA
Glawe Number5
Mendeleev Number116
Pettifor Number5
Geochemical Classvolatile
Goldschmidt classificationatmophile

other

Gas Basicity
478.1 kJ/mol
polarizability
27.32 ± 0.2 a₀
C6 Dispersion Coefficient
allotrope
Neutron cross section
25
Neutron Mass Absorption
0.0083
quantum number1S0
space group225 (Fm_3m)

Isotopes of Xenon

Stable Isotopes5
Unstable Isotopes38
Natural Isotopes9
Isotopic Composition12926.40%12926.40%13226.91%13226.91%13121.23%13121.23%13410.44%13410.44%1368.86%1368.86%1304.07%1304.07%1281.91%1281.91%1240.10%1240.10%1260.09%1260.09%

108Xe

mass number108
neutron number54
relative atomic mass
107.954232285 ± 0.000407406 Da
g-factor
0
natural abundance
Illanchaykuy☢️ radioactive element
Kuskan ismuykuy mit'a
72 ± 35 us
spin0
nuclear quadrupole moment
0
time of discovery or invention2018
parity+

decay modeintensity
α (α emission)100%

109Xe

mass number109
neutron number55
relative atomic mass
108.950434955 ± 0.000322178 Da
g-factor
natural abundance
Illanchaykuy☢️ radioactive element
Kuskan ismuykuy mit'a
13 ± 2 ms
spin7/2
nuclear quadrupole moment
time of discovery or invention2006
parity+

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

110Xe

mass number110
neutron number56
relative atomic mass
109.944258759 ± 0.000108415 Da
g-factor
0
natural abundance
Illanchaykuy☢️ radioactive element
Kuskan ismuykuy mit'a
93 ± 3 ms
spin0
nuclear quadrupole moment
0
time of discovery or invention1981
parity+

decay modeintensity
α (α emission)64%
β+ (β+ decay; β+ = ϵ + e+)36%
β+ p (β+-delayed proton emission)

111Xe

mass number111
neutron number57
relative atomic mass
110.94147 ± 0.000124 Da
g-factor
natural abundance
Illanchaykuy☢️ radioactive element
Kuskan ismuykuy mit'a
740 ± 200 ms
spin5/2
nuclear quadrupole moment
time of discovery or invention1979
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)89.6%
α (α emission)10.4%
β+ p (β+-delayed proton emission)

112Xe

mass number112
neutron number58
relative atomic mass
111.935559068 ± 0.000008891 Da
g-factor
0
natural abundance
Illanchaykuy☢️ radioactive element
Kuskan ismuykuy mit'a
2.7 ± 0.8 s
spin0
nuclear quadrupole moment
0
time of discovery or invention1978
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)98.8%
α (α emission)1.2%
β+ p (β+-delayed proton emission)

113Xe

mass number113
neutron number59
relative atomic mass
112.933221663 ± 0.000007342 Da
g-factor
natural abundance
Illanchaykuy☢️ radioactive element
Kuskan ismuykuy mit'a
2.74 ± 0.08 s
spin5/2
nuclear quadrupole moment
time of discovery or invention1973
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
α (α emission)
β+ p (β+-delayed proton emission)7%
β+α (β+-delayed α emission)0.007%

114Xe

mass number114
neutron number60
relative atomic mass
113.927980329 ± 0.000012 Da
g-factor
0
natural abundance
Illanchaykuy☢️ radioactive element
Kuskan ismuykuy mit'a
10 ± 0.4 s
spin0
nuclear quadrupole moment
0
time of discovery or invention1977
parity+

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

115Xe

mass number115
neutron number61
relative atomic mass
114.926293943 ± 0.000013 Da
g-factor
natural abundance
Illanchaykuy☢️ radioactive element
Kuskan ismuykuy mit'a
18 ± 3 s
spin5/2
nuclear quadrupole moment
time of discovery or invention1969
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
β+ p (β+-delayed proton emission)0.34%

116Xe

mass number116
neutron number62
relative atomic mass
115.921580955 ± 0.000013974 Da
g-factor
0
natural abundance
Illanchaykuy☢️ radioactive element
Kuskan ismuykuy mit'a
59 ± 2 s
spin0
nuclear quadrupole moment
0
time of discovery or invention1969
parity+

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

117Xe

mass number117
neutron number63
relative atomic mass
116.920358758 ± 0.000011141 Da
g-factor
-0.23752 ± 0.0006
natural abundance
Illanchaykuy☢️ radioactive element
Kuskan ismuykuy mit'a
61 ± 2 s
spin5/2
nuclear quadrupole moment
1.1 ± 0.4
time of discovery or invention1969
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
β+ p (β+-delayed proton emission)0.0029%

118Xe

mass number118
neutron number64
relative atomic mass
117.916178678 ± 0.000011141 Da
g-factor
0
natural abundance
Illanchaykuy☢️ radioactive element
Kuskan ismuykuy mit'a
3.8 ± 0.9 m
spin0
nuclear quadrupole moment
0
time of discovery or invention1965
parity+

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

119Xe

mass number119
neutron number65
relative atomic mass
118.915410641 ± 0.000011141 Da
g-factor
-0.26168 ± 0.0006
natural abundance
Illanchaykuy☢️ radioactive element
Kuskan ismuykuy mit'a
5.8 ± 0.3 m
spin5/2
nuclear quadrupole moment
1.29 ± 0.05
time of discovery or invention1965
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
e+ (positron emission)79%
ϵ (electron capture)21%

120Xe

mass number120
neutron number66
relative atomic mass
119.911784267 ± 0.000012686 Da
g-factor
0
natural abundance
Illanchaykuy☢️ radioactive element
Kuskan ismuykuy mit'a
46 ± 0.6 m
spin0
nuclear quadrupole moment
0
time of discovery or invention1965
parity+

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

121Xe

mass number121
neutron number67
relative atomic mass
120.911453012 ± 0.000010995 Da
g-factor
-0.2804 ± 0.0012
natural abundance
Illanchaykuy☢️ radioactive element
Kuskan ismuykuy mit'a
40.1 ± 2 m
spin5/2
nuclear quadrupole moment
1.31 ± 0.05
time of discovery or invention1952
parity+

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

122Xe

mass number122
neutron number68
relative atomic mass
121.908367655 ± 0.000011928 Da
g-factor
0
natural abundance
Illanchaykuy☢️ radioactive element
Kuskan ismuykuy mit'a
20.1 ± 0.1 h
spin0
nuclear quadrupole moment
0
time of discovery or invention1952
parity+

decay modeintensity
ϵ (electron capture)100%

123Xe

mass number123
neutron number69
relative atomic mass
122.908482235 ± 0.000010234 Da
g-factor
-0.3 ± 0.006
natural abundance
Illanchaykuy☢️ radioactive element
Kuskan ismuykuy mit'a
2.08 ± 0.02 h
spin1/2
nuclear quadrupole moment
0
time of discovery or invention1952
parity+

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

124Xe

mass number124
neutron number70
relative atomic mass
123.905885174 ± 0.000001457 Da
g-factor
0
natural abundance
0.095 ± 0.005
Illanchaykuy☢️ radioactive element
Kuskan ismuykuy mit'a
spin0
nuclear quadrupole moment
0
time of discovery or invention1922
parity+

decay modeintensity
+ (double β+ decay)

125Xe

mass number125
neutron number71
relative atomic mass
124.90638764 ± 0.000001518 Da
g-factor
-0.538 ± 0.006
natural abundance
Illanchaykuy☢️ radioactive element
Kuskan ismuykuy mit'a
16.87 ± 0.08 h
spin1/2
nuclear quadrupole moment
0
time of discovery or invention1950
parity+

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

126Xe

mass number126
neutron number72
relative atomic mass
125.904297422 ± 0.000000006 Da
g-factor
0
natural abundance
0.089 ± 0.003
Illanchaykuy☢️ radioactive element
Kuskan ismuykuy mit'a
spin0
nuclear quadrupole moment
0
time of discovery or invention1922
parity+

decay modeintensity
+ (double β+ decay)

127Xe

mass number127
neutron number73
relative atomic mass
126.905183636 ± 0.000004388 Da
g-factor
-1.0066 ± 0.0022
natural abundance
Illanchaykuy☢️ radioactive element
Kuskan ismuykuy mit'a
36.342 ± 0.003 d
spin1/2
nuclear quadrupole moment
0
time of discovery or invention1950
parity+

decay modeintensity
ϵ (electron capture)100%

128Xe

mass number128
neutron number74
relative atomic mass
127.90353075341 ± 0.00000000558 Da
g-factor
0
natural abundance
1.91 ± 0.013
Illanchaykuystable isotope
Kuskan ismuykuy mit'aNot Radioactive ☢️
spin0
nuclear quadrupole moment
0
time of discovery or invention1922
parity+

129Xe

mass number129
neutron number75
relative atomic mass
128.90478085742 ± 0.00000000542 Da
g-factor
-1.555922 ± 0.000032
natural abundance
26.401 ± 0.138
Illanchaykuystable isotope
Kuskan ismuykuy mit'aNot Radioactive ☢️
spin1/2
nuclear quadrupole moment
0
time of discovery or invention1920
parity+

130Xe

mass number130
neutron number76
relative atomic mass
129.903509346 ± 0.00000001 Da
g-factor
0
natural abundance
4.071 ± 0.022
Illanchaykuystable isotope
Kuskan ismuykuy mit'aNot Radioactive ☢️
spin0
nuclear quadrupole moment
0
time of discovery or invention1922
parity+

131Xe

mass number131
neutron number77
relative atomic mass
130.90508412808 ± 0.00000000549 Da
g-factor
0.46123 ± 0.0000046666666666667
natural abundance
21.232 ± 0.051
Illanchaykuystable isotope
Kuskan ismuykuy mit'aNot Radioactive ☢️
spin3/2
nuclear quadrupole moment
-0.114 ± 0.001
time of discovery or invention1920
parity+

132Xe

mass number132
neutron number78
relative atomic mass
131.90415508346 ± 0.00000000544 Da
g-factor
0
natural abundance
26.909 ± 0.055
Illanchaykuystable isotope
Kuskan ismuykuy mit'aNot Radioactive ☢️
spin0
nuclear quadrupole moment
0
time of discovery or invention1920
parity+

133Xe

mass number133
neutron number79
relative atomic mass
132.905910748 ± 0.000002576 Da
g-factor
natural abundance
Illanchaykuy☢️ radioactive element
Kuskan ismuykuy mit'a
5.2474 ± 0.0005 d
spin3/2
nuclear quadrupole moment
0.14 ± 0.005
time of discovery or invention1940
parity+

decay modeintensity
β (β decay)100%

134Xe

mass number134
neutron number80
relative atomic mass
133.90539303 ± 0.000000006 Da
g-factor
0
natural abundance
10.436 ± 0.035
Illanchaykuy☢️ radioactive element
Kuskan ismuykuy mit'a
spin0
nuclear quadrupole moment
0
time of discovery or invention1920
parity+

decay modeintensity
(double β decay)

135Xe

mass number135
neutron number81
relative atomic mass
134.907231441 ± 0.000003938 Da
g-factor
0.60213333333333 ± 0.00046666666666667
natural abundance
Illanchaykuy☢️ radioactive element
Kuskan ismuykuy mit'a
9.14 ± 0.02 h
spin3/2
nuclear quadrupole moment
0.21 ± 0.007
time of discovery or invention1940
parity+

decay modeintensity
β (β decay)100%

136Xe

mass number136
neutron number82
relative atomic mass
135.907214474 ± 0.000000007 Da
g-factor
0
natural abundance
8.857 ± 0.072
Illanchaykuy☢️ radioactive element
Kuskan ismuykuy mit'a
2.18 ± 0.05 Zy
spin0
nuclear quadrupole moment
0
time of discovery or invention1920
parity+

decay modeintensity
(double β decay)100%

137Xe

mass number137
neutron number83
relative atomic mass
136.911557771 ± 0.000000111 Da
g-factor
-0.27725714285714 ± 0.00028571428571429
natural abundance
Illanchaykuy☢️ radioactive element
Kuskan ismuykuy mit'a
3.818 ± 0.013 m
spin7/2
nuclear quadrupole moment
-0.47 ± 0.02
time of discovery or invention1943
parity-

decay modeintensity
β (β decay)100%

138Xe

mass number138
neutron number84
relative atomic mass
137.914146268 ± 0.00000301 Da
g-factor
0
natural abundance
Illanchaykuy☢️ radioactive element
Kuskan ismuykuy mit'a
14.14 ± 0.07 m
spin0
nuclear quadrupole moment
0
time of discovery or invention1943
parity+

decay modeintensity
β (β decay)100%

139Xe

mass number139
neutron number85
relative atomic mass
138.9187922 ± 0.0000023 Da
g-factor
-0.20266666666667 ± 0.0010666666666667
natural abundance
Illanchaykuy☢️ radioactive element
Kuskan ismuykuy mit'a
39.68 ± 0.14 s
spin3/2
nuclear quadrupole moment
0.39 ± 0.02
time of discovery or invention1951
parity-

decay modeintensity
β (β decay)100%

140Xe

mass number140
neutron number86
relative atomic mass
139.921645814 ± 0.0000025 Da
g-factor
0
natural abundance
Illanchaykuy☢️ radioactive element
Kuskan ismuykuy mit'a
13.6 ± 0.1 s
spin0
nuclear quadrupole moment
0
time of discovery or invention1951
parity+

decay modeintensity
β (β decay)100%

141Xe

mass number141
neutron number87
relative atomic mass
140.926787181 ± 0.0000031 Da
g-factor
0.004 ± 0.0012
natural abundance
Illanchaykuy☢️ radioactive element
Kuskan ismuykuy mit'a
1.73 ± 0.01 s
spin5/2
nuclear quadrupole moment
-0.57 ± 0.02
time of discovery or invention1951
parity-

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)0.044%

142Xe

mass number142
neutron number88
relative atomic mass
141.929973095 ± 0.0000029 Da
g-factor
0
natural abundance
Illanchaykuy☢️ radioactive element
Kuskan ismuykuy mit'a
1.23 ± 0.02 s
spin0
nuclear quadrupole moment
0
time of discovery or invention1960
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)0.37%

143Xe

mass number143
neutron number89
relative atomic mass
142.93536955 ± 0.000005 Da
g-factor
-0.184 ± 0.0008
natural abundance
Illanchaykuy☢️ radioactive element
Kuskan ismuykuy mit'a
511 ± 6 ms
spin5/2
nuclear quadrupole moment
0.91 ± 0.03
time of discovery or invention1951
parity-

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

144Xe

mass number144
neutron number90
relative atomic mass
143.938945076 ± 0.0000057 Da
g-factor
0
natural abundance
Illanchaykuy☢️ radioactive element
Kuskan ismuykuy mit'a
388 ± 7 ms
spin0
nuclear quadrupole moment
0
time of discovery or invention2003
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)3%

145Xe

mass number145
neutron number91
relative atomic mass
144.944719631 ± 0.000012 Da
g-factor
natural abundance
Illanchaykuy☢️ radioactive element
Kuskan ismuykuy mit'a
188 ± 4 ms
spin3/2
nuclear quadrupole moment
time of discovery or invention2003
parity-

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)5%
2n (2-neutron emission)

146Xe

mass number146
neutron number92
relative atomic mass
145.948518245 ± 0.000026 Da
g-factor
0
natural abundance
Illanchaykuy☢️ radioactive element
Kuskan ismuykuy mit'a
146 ± 6 ms
spin0
nuclear quadrupole moment
0
time of discovery or invention1989
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)6.9%

147Xe

mass number147
neutron number93
relative atomic mass
146.954482 ± 0.000215 Da
g-factor
natural abundance
Illanchaykuy☢️ radioactive element
Kuskan ismuykuy mit'a
88 ± 14 ms
spin3/2
nuclear quadrupole moment
time of discovery or invention1994
parity-

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)8%
2n (2-neutron emission)

148Xe

mass number148
neutron number94
relative atomic mass
147.958508 ± 0.000322 Da
g-factor
0
natural abundance
Illanchaykuy☢️ radioactive element
Kuskan ismuykuy mit'a
85 ± 15 ms
spin0
nuclear quadrupole moment
0
time of discovery or invention2010
parity+

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

149Xe

mass number149
neutron number95
relative atomic mass
148.964573 ± 0.000322 Da
g-factor
natural abundance
Illanchaykuy☢️ radioactive element
Kuskan ismuykuy mit'a
spin3/2
nuclear quadrupole moment
time of discovery or invention2018
parity-

decay modeintensity
β (β decay)
β n (β-delayed neutron emission)
2n (2-neutron emission)

150Xe

mass number150
neutron number96
relative atomic mass
149.968878 ± 0.000322 Da
g-factor
0
natural abundance
Illanchaykuy☢️ radioactive element
Kuskan ismuykuy mit'a
spin0
nuclear quadrupole moment
0
time of discovery or invention2018
parity+

decay modeintensity
β (β decay)
β n (β-delayed neutron emission)
2n (2-neutron emission)
Xenon discharge tube

wiñay kawsay

discoverer or inventorSir William Ramsay; M. W. Travers
location of discoveryEngland
time of discovery or invention1898
etymologyGreek: xenos (strange).
pronunciationZEE-non (Ingles Simi)

source

Abundance
Abundance in Earth's crust
0.00003 mg/kg
natural abundance (Mama qucha)
0.00005 mg/L
natural abundance (human body)
natural abundance (meteoroid)
natural abundance (Inti)
Abundance in Universe
0.000001 %

Nuclear Screening Constants

1s1.0785
2p4.1654
2s14.197
3d14.0532
3p18.3324
3s18.4236
4d32.1068
4p29.0428
4s27.8272
5p41.5755
5s39.782