Seziy

Seziy (Cs)

chemical element with symbol Cs and atomic number 55
Atomic Number55
Atomic Weight132.90545196
mass number133
Group1
Period6
Blocks
Proton55 p+
Neytron78 n0
Elektron55 e-
Animated Bohr model of Cs (Seziy)

Fizik Xossa

Atom Radiusi
260 pm
Molyar hajm
Kovalentlik Radiusi
232 pm
Metallic Radius
235 pm
Ion radiuslar
167 pm
Crystal Radius
181 pm
Van der Waals radius
343 pm
density
1,873 g/cm³
Atomic Radii Of The Elements: Seziy0102030405060708090100110120130140150160170180190200210220230240250260270280290300310320330340350pmAtom RadiusiKovalentlik RadiusiMetallic RadiusVan der Waals radius

Chemical Property

energiya
proton affinity
electron affinity
0,471626 eV/particle
ionization energy
3,893905548 eV/particle
ionization energy of Cs (Seziy)
Solishtirma qaynash issiqligi
68,3 kJ/mol
solishtirma erish issiqligi
2,09 kJ/mol
standard enthalpy of formation
76,5 kJ/mol
Elektron
Ion asboblar2, 8, 18, 18, 8, 1
Bohr model: Cs (Seziy)
valence electron1
Lewis structure: Cs (Seziy)
electron configuration[Xe] 6s1
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s1
Enhanced Bohr model of Cs (Seziy)
Orbital Diagram of Cs (Seziy)
Oksidlanish darajasi-1, 1
Elektrmanfiylik
0.79
Electrophilicity Index
0,696095447101947 eV/particle
fundamental state of matter
phase of matterSolid
gaseous state of matter
Boiling Point
944,15 K
Melting Point
301,65 K
critical pressure
9,4 MPa
critical temperature
1 938,15 K
triple point
appearance
Rang
Silver
appearancesilvery gold
refractive index
thermodynamic material property
Thermal Conductivity
35,9 W/(m K)
Issiqlikdan kengayish
molar heat capacity
32,21 J/(mol K)
Specific Heat Capacity
0,242 J/(g⋅K)
heat capacity ratio
electrical properties
typeConductor
electrical conductivity
5 MS/m
electrical resistivity
0,0000002 m Ω
superconductivity
Magnetizm
typeparamagnetic
magnetic susceptibility (Mass)
0,0000000028 m³/Kg
magnetic susceptibility (Molar)
0,000000000372 m³/mol
magnetic susceptibility (Volume)
0,00000526
magnetic ordering
Kyuri nuqtasi
Néel temperature
Tuzilma
Crystal StructureBody Centered Cubic (BCC)
Kristall panjara davri
6,05 Å
Lattice Anglesπ/2, π/2, π/2
mechanical property
Qattiqlik
0,2 MPa
bulk modulus
1,6 GPa
shear modulus
Yung moduli
1,7 GPa
Poisson's ratio
Tovush tezligi
klassifikatsiya
CategoryAlkali metals, Alkali metals
CAS GroupIA
IUPAC GroupIA
Glawe Number8
Mendeleev Number5
Pettifor Number8
Geochemical Classalkali metal
Goldschmidt classificationlitophile

other

Gas Basicity
polarizability
400,9 ± 0,7 a₀
C6 Dispersion Coefficient
allotrope
Neutron cross section
29
Neutron Mass Absorption
0,0077
Atom kvant sonlari2S1/2
space group229 (Im_3m)

Isotopes of Cesium

Stable Isotopes1
Unstable Isotopes41
Natural Isotopes1

111Cs

mass number111
neutron number56
Nisbiy atom massa
110,953945 ± 0,000215 Da
g-factor
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
spin3/2
nuclear quadrupole moment
time of discovery or invention
parity+

decay modeintensity
p (proton emission)

112Cs

mass number112
neutron number57
Nisbiy atom massa
111,950172 ± 0,000124 Da
g-factor
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
490 ± 30 us
spin1
nuclear quadrupole moment
time of discovery or invention1994
parity+

decay modeintensity
p (proton emission)100%
α (α emission)0.26%

113Cs

mass number113
neutron number58
Nisbiy atom massa
112,944428484 ± 0,000009207 Da
g-factor
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
16,94 ± 0,09 us
spin3/2
nuclear quadrupole moment
time of discovery or invention1984
parity+

decay modeintensity
p (proton emission)100%

114Cs

mass number114
neutron number59
Nisbiy atom massa
113,941292244 ± 0,000091323 Da
g-factor
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
570 ± 20 ms
spin1
nuclear quadrupole moment
time of discovery or invention1978
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
α (α emission)0.018%
β+ p (β+-delayed proton emission)8.7%
β+α (β+-delayed α emission)0.19%

115Cs

mass number115
neutron number60
Nisbiy atom massa
114,93591 ± 0,00011 Da
g-factor
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
1,4 ± 0,8 s
spin9/2
nuclear quadrupole moment
time of discovery or invention1978
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
β+ p (β+-delayed proton emission)0.07%

116Cs

mass number116
neutron number61
Nisbiy atom massa
115,933395 ± 0,000108 Da
g-factor
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
700 ± 40 ms
spin1
nuclear quadrupole moment
time of discovery or invention1975
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
β+ p (β+-delayed proton emission)0.28%
β+α (β+-delayed α emission)0.049%

117Cs

mass number117
neutron number62
Nisbiy atom massa
116,928616723 ± 0,000067 Da
g-factor
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
8,4 ± 0,6 s
spin9/2
nuclear quadrupole moment
time of discovery or invention1972
parity+

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

118Cs

mass number118
neutron number63
Nisbiy atom massa
117,926559517 ± 0,00001369 Da
g-factor
1,935 ± 0,0025
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
14 ± 2 s
spin2
nuclear quadrupole moment
1,31 ± 0,17
time of discovery or invention1969
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
β+ p (β+-delayed proton emission)0.021%
β+α (β+-delayed α emission)0.0012%

119Cs

mass number119
neutron number64
Nisbiy atom massa
118,922377327 ± 0,000014965 Da
g-factor
1,2111111111111 ± 0,0066666666666667
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
43 ± 0,2 s
spin9/2
nuclear quadrupole moment
2,65 ± 0,17
time of discovery or invention1969
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
β+α (β+-delayed α emission)2%

120Cs

mass number120
neutron number65
Nisbiy atom massa
119,920677277 ± 0,000010702 Da
g-factor
1,93 ± 0,01
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
60,4 ± 0,6 s
spin2
nuclear quadrupole moment
1,36 ± 0,07
time of discovery or invention1969
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
β+α (β+-delayed α emission)2%
β+ p (β+-delayed proton emission)7%

121Cs

mass number121
neutron number66
Nisbiy atom massa
120,917227235 ± 0,00001534 Da
g-factor
0,51266666666667 ± 0,0026666666666667
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
155 ± 4 s
spin3/2
nuclear quadrupole moment
0,79 ± 0,04
time of discovery or invention1969
parity+

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

122Cs

mass number122
neutron number67
Nisbiy atom massa
121,916108144 ± 0,000036164 Da
g-factor
0,133 ± 0,002
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
21,18 ± 0,19 s
spin1
nuclear quadrupole moment
-0,179 ± 0,01
time of discovery or invention1969
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
β+α (β+-delayed α emission)2%

123Cs

mass number123
neutron number68
Nisbiy atom massa
122,91299606 ± 0,000013 Da
g-factor
2,75 ± 0,014
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
5,88 ± 0,03 m
spin1/2
nuclear quadrupole moment
0
time of discovery or invention1954
parity+

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

124Cs

mass number124
neutron number69
Nisbiy atom massa
123,912247366 ± 0,000009823 Da
g-factor
0,672 ± 0,003
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
30,9 ± 0,4 s
spin1
nuclear quadrupole moment
-0,69 ± 0,04
time of discovery or invention1969
parity+

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

125Cs

mass number125
neutron number70
Nisbiy atom massa
124,909725953 ± 0,000008304 Da
g-factor
2,814 ± 0,014
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
44,35 ± 0,29 m
spin1/2
nuclear quadrupole moment
0
time of discovery or invention1954
parity+

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

126Cs

mass number126
neutron number71
Nisbiy atom massa
125,909445821 ± 0,00001112 Da
g-factor
0,776 ± 0,004
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
1,64 ± 0,02 m
spin1
nuclear quadrupole moment
-0,64 ± 0,03
time of discovery or invention1954
parity+

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

127Cs

mass number127
neutron number72
Nisbiy atom massa
126,907417527 ± 0,000005987 Da
g-factor
2,914 ± 0,014
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
6,25 ± 0,1 h
spin1/2
nuclear quadrupole moment
0
time of discovery or invention1950
parity+

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

128Cs

mass number128
neutron number73
Nisbiy atom massa
127,907748452 ± 0,000005771 Da
g-factor
0,972 ± 0,005
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
3,64 ± 0,014 m
spin1
nuclear quadrupole moment
-0,54 ± 0,03
time of discovery or invention1951
parity+

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

129Cs

mass number129
neutron number74
Nisbiy atom massa
128,90606591 ± 0,000004888 Da
g-factor
2,978 ± 0,016
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
32,06 ± 0,06 h
spin1/2
nuclear quadrupole moment
0
time of discovery or invention1950
parity+

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

130Cs

mass number130
neutron number75
Nisbiy atom massa
129,906709281 ± 0,000008971 Da
g-factor
1,458 ± 0,007
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
29,21 ± 0,04 m
spin1
nuclear quadrupole moment
-0,056 ± 0,006
time of discovery or invention1952
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)98.4%
β (β decay)1.6%

131Cs

mass number131
neutron number76
Nisbiy atom massa
130,905468457 ± 0,00000019 Da
g-factor
1,4144 ± 0,0012
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
9,689 ± 0,016 d
spin5/2
nuclear quadrupole moment
0,59 ± 0,02
time of discovery or invention1947
parity+

decay modeintensity
ϵ (electron capture)100%

132Cs

mass number132
neutron number77
Nisbiy atom massa
131,90643774 ± 0,000001112 Da
g-factor
1,1095 ± 0,0035
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
6,48 ± 0,006 d
spin2
nuclear quadrupole moment
0,48 ± 0,02
time of discovery or invention1953
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)98.13%
β (β decay)1.87%

133Cs

mass number133
neutron number78
Nisbiy atom massa
132,905451958 ± 0,000000008 Da
g-factor
0,73651428571429 ± 0,0004
natural abundance
100
Radioaktivlikstable isotope
Yarim yemirilish davriNot Radioactive ☢️
spin7/2
nuclear quadrupole moment
-0,00343 ± 0,0001
time of discovery or invention1921
parity+

134Cs

mass number134
neutron number79
Nisbiy atom massa
133,906718501 ± 0,000000017 Da
g-factor
0,747325 ± 0,00035
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
2,065 ± 0,0004 y
spin4
nuclear quadrupole moment
0,37 ± 0,02
time of discovery or invention1940
parity+

decay modeintensity
β (β decay)100%
ϵ (electron capture)0.0003%

135Cs

mass number135
neutron number80
Nisbiy atom massa
134,905976907 ± 0,00000039 Da
g-factor
0,77951428571429 ± 0,00037142857142857
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
1,33 ± 0,19 My
spin7/2
nuclear quadrupole moment
0,048 ± 0,003
time of discovery or invention1949
parity+

decay modeintensity
β (β decay)100%

136Cs

mass number136
neutron number81
Nisbiy atom massa
135,907311431 ± 0,00000201 Da
g-factor
0,741 ± 0,003
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
13,01 ± 0,05 d
spin5
nuclear quadrupole moment
0,213 ± 0,015
time of discovery or invention1951
parity+

decay modeintensity
β (β decay)100%

137Cs

mass number137
neutron number82
Nisbiy atom massa
136,907089296 ± 0,000000324 Da
g-factor
0,81068571428571 ± 0,0004
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
30,04 ± 0,04 y
spin7/2
nuclear quadrupole moment
0,048 ± 0,002
time of discovery or invention1951
parity+

decay modeintensity
β (β decay)100%

138Cs

mass number138
neutron number83
Nisbiy atom massa
137,911017119 ± 0,000009831 Da
g-factor
0,233 ± 0,0013333333333333
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
33,5 ± 0,2 m
spin3
nuclear quadrupole moment
0,112 ± 0,017
time of discovery or invention1943
parity-

decay modeintensity
β (β decay)100%

139Cs

mass number139
neutron number84
Nisbiy atom massa
138,913363822 ± 0,000003364 Da
g-factor
0,768 ± 0,0011428571428571
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
9,27 ± 0,05 m
spin7/2
nuclear quadrupole moment
-0,063 ± 0,014
time of discovery or invention1939
parity+

decay modeintensity
β (β decay)100%

140Cs

mass number140
neutron number85
Nisbiy atom massa
139,917283707 ± 0,000008801 Da
g-factor
0,134 ± 0,001
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
63,7 ± 0,3 s
spin1
nuclear quadrupole moment
-0,094 ± 0,015
time of discovery or invention1950
parity-

decay modeintensity
β (β decay)100%

141Cs

mass number141
neutron number86
Nisbiy atom massa
140,920045279 ± 0,000009871 Da
g-factor
0,69457142857143 ± 0,0028571428571429
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
24,84 ± 0,16 s
spin7/2
nuclear quadrupole moment
-0,42 ± 0,07
time of discovery or invention1962
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)0.0342%

142Cs

mass number142
neutron number87
Nisbiy atom massa
141,924299514 ± 0,000007586 Da
g-factor
0
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
1,687 ± 0,01 s
spin0
nuclear quadrupole moment
0
time of discovery or invention1962
parity-

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)0.089%

143Cs

mass number143
neutron number88
Nisbiy atom massa
142,927347346 ± 0,00000813 Da
g-factor
0,57933333333333 ± 0,0026666666666667
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
1,802 ± 0,008 s
spin3/2
nuclear quadrupole moment
0,44 ± 0,03
time of discovery or invention1962
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)1.62%

144Cs

mass number144
neutron number89
Nisbiy atom massa
143,932075402 ± 0,000021612 Da
g-factor
-0,545 ± 0,003
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
994 ± 6 ms
spin1
nuclear quadrupole moment
0,29 ± 0,02
time of discovery or invention1967
parity-

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)2.98%

145Cs

mass number145
neutron number90
Nisbiy atom massa
144,935528927 ± 0,000009733 Da
g-factor
0,522 ± 0,0026666666666667
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
582 ± 4 ms
spin3/2
nuclear quadrupole moment
0,58 ± 0,06
time of discovery or invention1971
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)12.8%

146Cs

mass number146
neutron number91
Nisbiy atom massa
145,940621867 ± 0,000003106 Da
g-factor
-0,514 ± 0,002
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
321,6 ± 0,9 ms
spin1
nuclear quadrupole moment
0,21 ± 0,03
time of discovery or invention1971
parity-

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)14.2%
2n (2-neutron emission)

147Cs

mass number147
neutron number92
Nisbiy atom massa
146,944261512 ± 0,000009 Da
g-factor
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
230,5 ± 0,9 ms
spin3/2
nuclear quadrupole moment
time of discovery or invention1978
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)28.5%

148Cs

mass number148
neutron number93
Nisbiy atom massa
147,949639026 ± 0,000014 Da
g-factor
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
151,8 ± 1 ms
spin2
nuclear quadrupole moment
time of discovery or invention1978
parity-

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)28.7%
2n (2-neutron emission)

149Cs

mass number149
neutron number94
Nisbiy atom massa
148,953516 ± 0,000429 Da
g-factor
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
112,3 ± 2,5 ms
spin3/2
nuclear quadrupole moment
time of discovery or invention1979
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)25%
2n (2-neutron emission)

150Cs

mass number150
neutron number95
Nisbiy atom massa
149,959023 ± 0,000429 Da
g-factor
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
81 ± 2,6 ms
spin2
nuclear quadrupole moment
time of discovery or invention1979
parity-

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)44%
2n (2-neutron emission)

151Cs

mass number151
neutron number96
Nisbiy atom massa
150,963199 ± 0,000537 Da
g-factor
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
59 ± 19 ms
spin3/2
nuclear quadrupole moment
time of discovery or invention1979
parity+

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

152Cs

mass number152
neutron number97
Nisbiy atom massa
151,968728 ± 0,000537 Da
g-factor
natural abundance
Radioaktivlik☢️ Radioaktiv elementlar
Yarim yemirilish davri
spin
nuclear quadrupole moment
time of discovery or invention1987
parity

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

tarix

discoverer or inventorGustov Kirchoff, Robert Bunsen
location of discoveryGermany
time of discovery or invention1860
EtimologiyaLatin: coesius (sky blue); for the blue lines of its spectrum.
pronunciationSEE-zi-em (inglizcha)

source

Abundance
Abundance in Earth's crust
natural abundance (Okean)
0,0003 mg/L
natural abundance (Inson tanasi)
0,000002 %
natural abundance (Meteoroid)
0,000014 %
natural abundance (Quyosh)
0,0000008 %
Abundance in Universe
0,00000008 %

Nuclear Screening Constants

1s1.0957
2p4.1804
2s14.4884
3d14.0194
3p18.4222
3s18.6226
4d32.1616
4p29.1424
4s27.9576
5p41.349
5s39.5555
6s48.637