Cezij

Cezij (Cs)

chemical element with symbol Cs and atomic number 55
Atomski broj55
Relativna atomska masa132.90545196
Maseni broj133
Skupina1
Perioda6
Bloks
proton55 p+
neutron78 n0
elektron55 e-
Animated Bohrov model atoma of Cs (Cezij)

Physical Property

Atomski Radijus
260 pm
Molni volumen
Kovalentni Radijus
232 pm
Metallic Radius
235 pm
Ionski radijus
167 pm
Crystal Radius
181 pm
Van der Waals radius
343 pm
gustoća
1,873 g/cm³
Atomic Radii Of The Elements: Cezij0102030405060708090100110120130140150160170180190200210220230240250260270280290300310320330340350pmAtomski RadijusKovalentni RadijusMetallic RadiusVan der Waals radius

Kemijsko Svojstvo

energija
proton affinity
Elektronski afinitet
0,471626 eV/particle
ionization energy
3,893905548 eV/particle
ionization energy of Cs (Cezij)
Toplina isparivanja
68,3 kJ/mol
toplina taljenja
2,09 kJ/mol
standard enthalpy of formation
76,5 kJ/mol
elektron
Elektronska ljuska2, 8, 18, 18, 8, 1
Bohrov model atoma: Cs (Cezij)
valence electron1
Lewis structure: Cs (Cezij)
electron configuration[Xe] 6s1
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s1
Enhanced Bohrov model atoma of Cs (Cezij)
Orbital Diagram of Cs (Cezij)
Oksidacijski broj-1, 1
Elektronegativnost
0.79
Electrophilicity Index
0,696095447101947 eV/particle
fundamental state of matter
agregatno stanjeČvrsto
gaseous state of matter
Vrelište
944,15 K
Talište
301,65 K
critical pressure
9,4 MPa
critical temperature
1.938,15 K
Trojna točka
appearance
boja
Srebrna
appearancesilvery gold
Indeks prelamanja
thermodynamic material property
Toplinska vodljivost
35,9 W/(m K)
Toplinsko istezanje
molar heat capacity
32,21 J/(mol K)
Specifični toplinski kapacitet
0,242 J/(g⋅K)
heat capacity ratio
electrical properties
typeConductor
electrical conductivity
5 MS/m
Električna otpornost i provodnost
0,0000002 m Ω
Supravodljivost
Magnetizam
typeparamagnetic
Magnetna susceptibilnost (Mass)
0,0000000028 m³/Kg
Magnetna susceptibilnost (Molar)
0,000000000372 m³/mol
Magnetna susceptibilnost (Volume)
0,00000526
magnetic ordering
Curieva temperatura
Néel temperature
struktura
Kristalna strukturaKubna prostorno centrirana (BCC)
lattice constant
6,05 Å
Lattice Anglesπ/2, π/2, π/2
mechanical property
Tvrdoća
0,2 MPa
bulk modulus
1,6 GPa
shear modulus
Youngov modul elastičnosti
1,7 GPa
Poissonov omjer
brzina zvuka
classification
KategorijaAlkalijski metali, 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
Nuklearni udarni presjek
29
Neutron Mass Absorption
0,0077
Kvantni brojevi2S1/2
space group229 (Im_3m)

Isotopes of Cesium

Stabilni izotopi1
Nestabilni izotopi41
Natural Isotopes1

111Cs

Maseni broj111
neutron number56
Relativna atomska masa
110,953945 ± 0,000215 Da
g-factor
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
spin3/2
nuclear quadrupole moment
vrijeme otkrića ili izuma
Parnost+

decay modeintensity
p (proton emission)

112Cs

Maseni broj112
neutron number57
Relativna atomska masa
111,950172 ± 0,000124 Da
g-factor
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
490 ± 30 us
spin1
nuclear quadrupole moment
vrijeme otkrića ili izuma1994
Parnost+

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

113Cs

Maseni broj113
neutron number58
Relativna atomska masa
112,944428484 ± 0,000009207 Da
g-factor
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
16,94 ± 0,09 us
spin3/2
nuclear quadrupole moment
vrijeme otkrića ili izuma1984
Parnost+

decay modeintensity
p (proton emission)100%

114Cs

Maseni broj114
neutron number59
Relativna atomska masa
113,941292244 ± 0,000091323 Da
g-factor
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
570 ± 20 ms
spin1
nuclear quadrupole moment
vrijeme otkrića ili izuma1978
Parnost+

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

Maseni broj115
neutron number60
Relativna atomska masa
114,93591 ± 0,00011 Da
g-factor
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
1,4 ± 0,8 s
spin9/2
nuclear quadrupole moment
vrijeme otkrića ili izuma1978
Parnost+

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

116Cs

Maseni broj116
neutron number61
Relativna atomska masa
115,933395 ± 0,000108 Da
g-factor
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
700 ± 40 ms
spin1
nuclear quadrupole moment
vrijeme otkrića ili izuma1975
Parnost+

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

Maseni broj117
neutron number62
Relativna atomska masa
116,928616723 ± 0,000067 Da
g-factor
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
8,4 ± 0,6 s
spin9/2
nuclear quadrupole moment
vrijeme otkrića ili izuma1972
Parnost+

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

118Cs

Maseni broj118
neutron number63
Relativna atomska masa
117,926559517 ± 0,00001369 Da
g-factor
1,935 ± 0,0025
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
14 ± 2 s
spin2
nuclear quadrupole moment
1,31 ± 0,17
vrijeme otkrića ili izuma1969
Parnost+

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

Maseni broj119
neutron number64
Relativna atomska masa
118,922377327 ± 0,000014965 Da
g-factor
1,2111111111111 ± 0,0066666666666667
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
43 ± 0,2 s
spin9/2
nuclear quadrupole moment
2,65 ± 0,17
vrijeme otkrića ili izuma1969
Parnost+

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

120Cs

Maseni broj120
neutron number65
Relativna atomska masa
119,920677277 ± 0,000010702 Da
g-factor
1,93 ± 0,01
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
60,4 ± 0,6 s
spin2
nuclear quadrupole moment
1,36 ± 0,07
vrijeme otkrića ili izuma1969
Parnost+

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

121Cs

Maseni broj121
neutron number66
Relativna atomska masa
120,917227235 ± 0,00001534 Da
g-factor
0,51266666666667 ± 0,0026666666666667
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
155 ± 4 s
spin3/2
nuclear quadrupole moment
0,79 ± 0,04
vrijeme otkrića ili izuma1969
Parnost+

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

122Cs

Maseni broj122
neutron number67
Relativna atomska masa
121,916108144 ± 0,000036164 Da
g-factor
0,133 ± 0,002
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
21,18 ± 0,19 s
spin1
nuclear quadrupole moment
−0,179 ± 0,01
vrijeme otkrića ili izuma1969
Parnost+

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

123Cs

Maseni broj123
neutron number68
Relativna atomska masa
122,91299606 ± 0,000013 Da
g-factor
2,75 ± 0,014
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
5,88 ± 0,03 m
spin1/2
nuclear quadrupole moment
0
vrijeme otkrića ili izuma1954
Parnost+

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

124Cs

Maseni broj124
neutron number69
Relativna atomska masa
123,912247366 ± 0,000009823 Da
g-factor
0,672 ± 0,003
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
30,9 ± 0,4 s
spin1
nuclear quadrupole moment
−0,69 ± 0,04
vrijeme otkrića ili izuma1969
Parnost+

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

125Cs

Maseni broj125
neutron number70
Relativna atomska masa
124,909725953 ± 0,000008304 Da
g-factor
2,814 ± 0,014
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
44,35 ± 0,29 m
spin1/2
nuclear quadrupole moment
0
vrijeme otkrića ili izuma1954
Parnost+

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

126Cs

Maseni broj126
neutron number71
Relativna atomska masa
125,909445821 ± 0,00001112 Da
g-factor
0,776 ± 0,004
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
1,64 ± 0,02 m
spin1
nuclear quadrupole moment
−0,64 ± 0,03
vrijeme otkrića ili izuma1954
Parnost+

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

127Cs

Maseni broj127
neutron number72
Relativna atomska masa
126,907417527 ± 0,000005987 Da
g-factor
2,914 ± 0,014
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
6,25 ± 0,1 h
spin1/2
nuclear quadrupole moment
0
vrijeme otkrića ili izuma1950
Parnost+

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

128Cs

Maseni broj128
neutron number73
Relativna atomska masa
127,907748452 ± 0,000005771 Da
g-factor
0,972 ± 0,005
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
3,64 ± 0,014 m
spin1
nuclear quadrupole moment
−0,54 ± 0,03
vrijeme otkrića ili izuma1951
Parnost+

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

129Cs

Maseni broj129
neutron number74
Relativna atomska masa
128,90606591 ± 0,000004888 Da
g-factor
2,978 ± 0,016
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
32,06 ± 0,06 h
spin1/2
nuclear quadrupole moment
0
vrijeme otkrića ili izuma1950
Parnost+

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

130Cs

Maseni broj130
neutron number75
Relativna atomska masa
129,906709281 ± 0,000008971 Da
g-factor
1,458 ± 0,007
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
29,21 ± 0,04 m
spin1
nuclear quadrupole moment
−0,056 ± 0,006
vrijeme otkrića ili izuma1952
Parnost+

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

131Cs

Maseni broj131
neutron number76
Relativna atomska masa
130,905468457 ± 0,00000019 Da
g-factor
1,4144 ± 0,0012
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
9,689 ± 0,016 d
spin5/2
nuclear quadrupole moment
0,59 ± 0,02
vrijeme otkrića ili izuma1947
Parnost+

decay modeintensity
ϵ (electron capture)100%

132Cs

Maseni broj132
neutron number77
Relativna atomska masa
131,90643774 ± 0,000001112 Da
g-factor
1,1095 ± 0,0035
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
6,48 ± 0,006 d
spin2
nuclear quadrupole moment
0,48 ± 0,02
vrijeme otkrića ili izuma1953
Parnost+

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

133Cs

Maseni broj133
neutron number78
Relativna atomska masa
132,905451958 ± 0,000000008 Da
g-factor
0,73651428571429 ± 0,0004
natural abundance
100
radioaktivnoststable isotope
Vrijeme poluraspadaNot Radioactive ☢️
spin7/2
nuclear quadrupole moment
−0,00343 ± 0,0001
vrijeme otkrića ili izuma1921
Parnost+

134Cs

Maseni broj134
neutron number79
Relativna atomska masa
133,906718501 ± 0,000000017 Da
g-factor
0,747325 ± 0,00035
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
2,065 ± 0,0004 y
spin4
nuclear quadrupole moment
0,37 ± 0,02
vrijeme otkrića ili izuma1940
Parnost+

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

135Cs

Maseni broj135
neutron number80
Relativna atomska masa
134,905976907 ± 0,00000039 Da
g-factor
0,77951428571429 ± 0,00037142857142857
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
1,33 ± 0,19 My
spin7/2
nuclear quadrupole moment
0,048 ± 0,003
vrijeme otkrića ili izuma1949
Parnost+

decay modeintensity
β (β decay)100%

136Cs

Maseni broj136
neutron number81
Relativna atomska masa
135,907311431 ± 0,00000201 Da
g-factor
0,741 ± 0,003
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
13,01 ± 0,05 d
spin5
nuclear quadrupole moment
0,213 ± 0,015
vrijeme otkrića ili izuma1951
Parnost+

decay modeintensity
β (β decay)100%

137Cs

Maseni broj137
neutron number82
Relativna atomska masa
136,907089296 ± 0,000000324 Da
g-factor
0,81068571428571 ± 0,0004
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
30,04 ± 0,04 y
spin7/2
nuclear quadrupole moment
0,048 ± 0,002
vrijeme otkrića ili izuma1951
Parnost+

decay modeintensity
β (β decay)100%

138Cs

Maseni broj138
neutron number83
Relativna atomska masa
137,911017119 ± 0,000009831 Da
g-factor
0,233 ± 0,0013333333333333
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
33,5 ± 0,2 m
spin3
nuclear quadrupole moment
0,112 ± 0,017
vrijeme otkrića ili izuma1943
Parnost-

decay modeintensity
β (β decay)100%

139Cs

Maseni broj139
neutron number84
Relativna atomska masa
138,913363822 ± 0,000003364 Da
g-factor
0,768 ± 0,0011428571428571
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
9,27 ± 0,05 m
spin7/2
nuclear quadrupole moment
−0,063 ± 0,014
vrijeme otkrića ili izuma1939
Parnost+

decay modeintensity
β (β decay)100%

140Cs

Maseni broj140
neutron number85
Relativna atomska masa
139,917283707 ± 0,000008801 Da
g-factor
0,134 ± 0,001
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
63,7 ± 0,3 s
spin1
nuclear quadrupole moment
−0,094 ± 0,015
vrijeme otkrića ili izuma1950
Parnost-

decay modeintensity
β (β decay)100%

141Cs

Maseni broj141
neutron number86
Relativna atomska masa
140,920045279 ± 0,000009871 Da
g-factor
0,69457142857143 ± 0,0028571428571429
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
24,84 ± 0,16 s
spin7/2
nuclear quadrupole moment
−0,42 ± 0,07
vrijeme otkrića ili izuma1962
Parnost+

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

142Cs

Maseni broj142
neutron number87
Relativna atomska masa
141,924299514 ± 0,000007586 Da
g-factor
0
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
1,687 ± 0,01 s
spin0
nuclear quadrupole moment
0
vrijeme otkrića ili izuma1962
Parnost-

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

143Cs

Maseni broj143
neutron number88
Relativna atomska masa
142,927347346 ± 0,00000813 Da
g-factor
0,57933333333333 ± 0,0026666666666667
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
1,802 ± 0,008 s
spin3/2
nuclear quadrupole moment
0,44 ± 0,03
vrijeme otkrića ili izuma1962
Parnost+

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

144Cs

Maseni broj144
neutron number89
Relativna atomska masa
143,932075402 ± 0,000021612 Da
g-factor
−0,545 ± 0,003
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
994 ± 6 ms
spin1
nuclear quadrupole moment
0,29 ± 0,02
vrijeme otkrića ili izuma1967
Parnost-

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

145Cs

Maseni broj145
neutron number90
Relativna atomska masa
144,935528927 ± 0,000009733 Da
g-factor
0,522 ± 0,0026666666666667
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
582 ± 4 ms
spin3/2
nuclear quadrupole moment
0,58 ± 0,06
vrijeme otkrića ili izuma1971
Parnost+

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

146Cs

Maseni broj146
neutron number91
Relativna atomska masa
145,940621867 ± 0,000003106 Da
g-factor
−0,514 ± 0,002
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
321,6 ± 0,9 ms
spin1
nuclear quadrupole moment
0,21 ± 0,03
vrijeme otkrića ili izuma1971
Parnost-

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

147Cs

Maseni broj147
neutron number92
Relativna atomska masa
146,944261512 ± 0,000009 Da
g-factor
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
230,5 ± 0,9 ms
spin3/2
nuclear quadrupole moment
vrijeme otkrića ili izuma1978
Parnost+

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

148Cs

Maseni broj148
neutron number93
Relativna atomska masa
147,949639026 ± 0,000014 Da
g-factor
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
151,8 ± 1 ms
spin2
nuclear quadrupole moment
vrijeme otkrića ili izuma1978
Parnost-

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

149Cs

Maseni broj149
neutron number94
Relativna atomska masa
148,953516 ± 0,000429 Da
g-factor
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
112,3 ± 2,5 ms
spin3/2
nuclear quadrupole moment
vrijeme otkrića ili izuma1979
Parnost+

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

150Cs

Maseni broj150
neutron number95
Relativna atomska masa
149,959023 ± 0,000429 Da
g-factor
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
81 ± 2,6 ms
spin2
nuclear quadrupole moment
vrijeme otkrića ili izuma1979
Parnost-

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

151Cs

Maseni broj151
neutron number96
Relativna atomska masa
150,963199 ± 0,000537 Da
g-factor
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
59 ± 19 ms
spin3/2
nuclear quadrupole moment
vrijeme otkrića ili izuma1979
Parnost+

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

152Cs

Maseni broj152
neutron number97
Relativna atomska masa
151,968728 ± 0,000537 Da
g-factor
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
spin
nuclear quadrupole moment
vrijeme otkrića ili izuma1987
Parnost

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

povijest

otkrio/izumioGustov Kirchoff, Robert Bunsen
location of discoveryGermany
vrijeme otkrića ili izuma1860
EtimologijaLatin: coesius (sky blue); for the blue lines of its spectrum.
pronunciationSEE-zi-em (engleski)

source

Obilnost
Zastupljenost u Zemljinoj kori
natural abundance (ocean)
0,0003 mg/L
natural abundance (tijelo)
0,000002 %
natural abundance (meteoroid)
0,000014 %
natural abundance (Sunce)
0,0000008 %
Zastupljenost u svemiru
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