Sesium (Cs)

chemical element with symbol Cs and atomic number 55

Atomic Number	55
Atomic Weight	132.90545196
Nombor jisim	133

Group	1
Period	6
Block	s

proton	55 p⁺
neutron	78 n⁰
Elektron	55 e^-

Sifat Fizikal

Jejari Atom	260 pm 249 pm
molar volume	70 cm³/mol
Jejari kovalen	232 pm 209 pm 237 pm 244 pm
Metallic Radius	235 pm 267 pm
ionic radius	167 pm 174 pm 178 pm 181 pm 185 pm 188 pm
Crystal Radius	181 pm 188 pm 192 pm 195 pm 199 pm 202 pm
Jejari van der Waals	300 pm 343 pm 344 pm 343 pm 451.7 pm
ketumpatan	1.873 g/cm³ 1,843 kg/m³

Sifat Kimia

tenaga

proton affinity
Pertalian elektron	0.471626 eV/particle
ionization energy	3.893905548 eV/particle 23.15745 eV/particle 33.195 eV/particle 43 eV/particle 56 eV/particle 69.1 eV/particle 82.9 eV/particle 110.09 eV/particle 125.61 eV/particle 213.3 eV/particle 233 eV/particle 261 eV/particle 289 eV/particle 316 eV/particle 352 eV/particle 382 eV/particle 413 eV/particle 445 eV/particle 476 eV/particle 597 eV/particle 629 eV/particle 666 eV/particle 700 eV/particle 753 eV/particle 791 eV/particle 875 eV/particle 916.07 eV/particle 1,592 eV/particle 1,672 eV/particle 1,757 eV/particle 1,848 eV/particle 1,936 eV/particle 2,029 eV/particle 2,137 eV/particle 2,230 eV/particle 2,329 eV/particle 2,422 eV/particle 2,683 eV/particle 2,767 eV/particle 2,859 eV/particle 2,945 eV/particle 3,118 eV/particle 3,214 eV/particle 3,392 eV/particle 3,485 eV/particle 7,989 eV/particle 8,224 eV/particle 8,484 eV/particle 8,726 eV/particle 9,350 eV/particle 9,629 eV/particle 9,974 eV/particle 10,208.78 eV/particle 41,861.073 eV/particle 42,912.99 eV/particle

Entalpi pengewapan	68.3 kJ/mol
entalpi pelakuran	2.09 kJ/mol
standard enthalpy of formation	76.5 kJ/mol
Elektron

Petala elektron	2, 8, 18, 18, 8, 1

Elektron valens	1 ⓘ

tatarajah elektron	[Xe] 6s¹ⓘ 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s¹

Keadaan pengoksidaan	-1, 1
Keelektronegatifan	3.898 eV/particle 0.1542125 0.79
Electrophilicity Index	0.696095447101947 eV/particle
keadaan jirim asas

fasa jirim	Solid
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
rupa
warna	Silver #ff1493 #57178f #57178f
rupa	silvery gold
indeks biasan
sifat bahan
Thermal Conductivity	35.9 W/(m K)
Pengembangan terma
molar heat capacity	32.21 J/(mol K)
Specific Heat Capacity	0.242 J/(g⋅K)
heat capacity ratio
electrical properties
type	Conductor
Kekonduksian elektrik	5 MS/m
Kerintangan dan kekonduksian elektrik	0.0000002 Ω*m
Kesuperkonduksian
kemagnetan
type	paramagnetic
magnetic susceptibility (Mass)	0.0000000028 m³/Kg
magnetic susceptibility (Molar)	0.000000000372 m³/mol
magnetic susceptibility (Volume)	0.00000526
magnetic ordering
Suhu Curie
Néel temperature
struktur
Crystal Structure	Body Centered Cubic (BCC)
lattice constant	6.05 Å
Lattice Angles	π/2, π/2, π/2
mechanical property
hardness	0.14 MPa 0.2 MPa
Modulus pukal	1.6 GPa
shear modulus
Young's modulus	1.7 GPa
Nisbah Poisson
Kelajuan bunyi
pengelasan
Category	Alkali metals, Alkali metals
CAS Group	IA
IUPAC Group	IA
Glawe Number	8
Mendeleev Number	5
Pettifor Number	8
Geochemical Class	alkali metal
Goldschmidt classification	litophile

other

Gas Basicity
polarizability	400.9 ± 0.7 a₀
C6 Dispersion Coefficient	6,660 a₀
allotrope
Neutron cross section	29
Neutron Mass Absorption	0.0077
Nombor kuantum	2S1/2
space group	229 (Im_3m)

Isotopes of Cesium

Stable Isotopes	1
Unstable Isotopes	41
Natural Isotopes	1

¹¹¹Cs

Nombor jisim	111
nombor neutron	56
Jisim Atom Relatif	110.953945 ± 0.000215 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat
Spin	3/2
nuclear quadrupole moment
tarikh penemuan
parity	+

decay mode	Keamatan (fizik)
p (proton emission)

¹¹²Cs

Nombor jisim	112
nombor neutron	57
Jisim Atom Relatif	111.950172 ± 0.000124 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	490 ± 30 us
Spin	1
nuclear quadrupole moment
tarikh penemuan	1994
parity	+

decay mode	Keamatan (fizik)
p (proton emission)	100%
α (α emission)	0.26%

¹¹³Cs

Nombor jisim	113
nombor neutron	58
Jisim Atom Relatif	112.944428484 ± 0.000009207 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	16.94 ± 0.09 us
Spin	3/2
nuclear quadrupole moment
tarikh penemuan	1984
parity	+

decay mode	Keamatan (fizik)
p (proton emission)	100%

¹¹⁴Cs

Nombor jisim	114
nombor neutron	59
Jisim Atom Relatif	113.941292244 ± 0.000091323 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	570 ± 20 ms
Spin	1
nuclear quadrupole moment
tarikh penemuan	1978
parity	+

decay mode	Keamatan (fizik)
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

Nombor jisim	115
nombor neutron	60
Jisim Atom Relatif	114.93591 ± 0.00011 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	1.4 ± 0.8 s
Spin	9/2
nuclear quadrupole moment
tarikh penemuan	1978
parity	+

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

¹¹⁶Cs

Nombor jisim	116
nombor neutron	61
Jisim Atom Relatif	115.933395 ± 0.000108 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	700 ± 40 ms
Spin	1
nuclear quadrupole moment
tarikh penemuan	1975
parity	+

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

¹¹⁷Cs

Nombor jisim	117
nombor neutron	62
Jisim Atom Relatif	116.928616723 ± 0.000067 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	8.4 ± 0.6 s
Spin	9/2
nuclear quadrupole moment
tarikh penemuan	1972
parity	+

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

¹¹⁸Cs

Nombor jisim	118
nombor neutron	63
Jisim Atom Relatif	117.926559517 ± 0.00001369 Da
g-factor	1.935 ± 0.0025
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	14 ± 2 s
Spin	2
nuclear quadrupole moment	1.31 ± 0.17
tarikh penemuan	1969
parity	+

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

¹¹⁹Cs

Nombor jisim	119
nombor neutron	64
Jisim Atom Relatif	118.922377327 ± 0.000014965 Da
g-factor	1.2111111111111 ± 0.0066666666666667
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	43 ± 0.2 s
Spin	9/2
nuclear quadrupole moment	2.65 ± 0.17
tarikh penemuan	1969
parity	+

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

¹²⁰Cs

Nombor jisim	120
nombor neutron	65
Jisim Atom Relatif	119.920677277 ± 0.000010702 Da
g-factor	1.93 ± 0.01
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	60.4 ± 0.6 s
Spin	2
nuclear quadrupole moment	1.36 ± 0.07
tarikh penemuan	1969
parity	+

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

¹²¹Cs

Nombor jisim	121
nombor neutron	66
Jisim Atom Relatif	120.917227235 ± 0.00001534 Da
g-factor	0.51266666666667 ± 0.0026666666666667
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	155 ± 4 s
Spin	3/2
nuclear quadrupole moment	0.79 ± 0.04
tarikh penemuan	1969
parity	+

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

¹²²Cs

Nombor jisim	122
nombor neutron	67
Jisim Atom Relatif	121.916108144 ± 0.000036164 Da
g-factor	0.133 ± 0.002
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	21.18 ± 0.19 s
Spin	1
nuclear quadrupole moment	-0.179 ± 0.01
tarikh penemuan	1969
parity	+

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

¹²³Cs

Nombor jisim	123
nombor neutron	68
Jisim Atom Relatif	122.91299606 ± 0.000013 Da
g-factor	2.75 ± 0.014
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	5.88 ± 0.03 m
Spin	1/2
nuclear quadrupole moment	0
tarikh penemuan	1954
parity	+

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

¹²⁴Cs

Nombor jisim	124
nombor neutron	69
Jisim Atom Relatif	123.912247366 ± 0.000009823 Da
g-factor	0.672 ± 0.003
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	30.9 ± 0.4 s
Spin	1
nuclear quadrupole moment	-0.69 ± 0.04
tarikh penemuan	1969
parity	+

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

¹²⁵Cs

Nombor jisim	125
nombor neutron	70
Jisim Atom Relatif	124.909725953 ± 0.000008304 Da
g-factor	2.814 ± 0.014
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	44.35 ± 0.29 m
Spin	1/2
nuclear quadrupole moment	0
tarikh penemuan	1954
parity	+

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

¹²⁶Cs

Nombor jisim	126
nombor neutron	71
Jisim Atom Relatif	125.909445821 ± 0.00001112 Da
g-factor	0.776 ± 0.004
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	1.64 ± 0.02 m
Spin	1
nuclear quadrupole moment	-0.64 ± 0.03
tarikh penemuan	1954
parity	+

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

¹²⁷Cs

Nombor jisim	127
nombor neutron	72
Jisim Atom Relatif	126.907417527 ± 0.000005987 Da
g-factor	2.914 ± 0.014
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	6.25 ± 0.1 h
Spin	1/2
nuclear quadrupole moment	0
tarikh penemuan	1950
parity	+

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

¹²⁸Cs

Nombor jisim	128
nombor neutron	73
Jisim Atom Relatif	127.907748452 ± 0.000005771 Da
g-factor	0.972 ± 0.005
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	3.64 ± 0.014 m
Spin	1
nuclear quadrupole moment	-0.54 ± 0.03
tarikh penemuan	1951
parity	+

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

¹²⁹Cs

Nombor jisim	129
nombor neutron	74
Jisim Atom Relatif	128.90606591 ± 0.000004888 Da
g-factor	2.978 ± 0.016
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	32.06 ± 0.06 h
Spin	1/2
nuclear quadrupole moment	0
tarikh penemuan	1950
parity	+

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

¹³⁰Cs

Nombor jisim	130
nombor neutron	75
Jisim Atom Relatif	129.906709281 ± 0.000008971 Da
g-factor	1.458 ± 0.007
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	29.21 ± 0.04 m
Spin	1
nuclear quadrupole moment	-0.056 ± 0.006
tarikh penemuan	1952
parity	+

decay mode	Keamatan (fizik)
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	98.4%
β⁻ (β⁻ decay)	1.6%

¹³¹Cs

Nombor jisim	131
nombor neutron	76
Jisim Atom Relatif	130.905468457 ± 0.00000019 Da
g-factor	1.4144 ± 0.0012
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	9.689 ± 0.016 d
Spin	5/2
nuclear quadrupole moment	0.59 ± 0.02
tarikh penemuan	1947
parity	+

decay mode	Keamatan (fizik)
ϵ (electron capture)	100%

¹³²Cs

Nombor jisim	132
nombor neutron	77
Jisim Atom Relatif	131.90643774 ± 0.000001112 Da
g-factor	1.1095 ± 0.0035
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	6.48 ± 0.006 d
Spin	2
nuclear quadrupole moment	0.48 ± 0.02
tarikh penemuan	1953
parity	+

decay mode	Keamatan (fizik)
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	98.13%
β⁻ (β⁻ decay)	1.87%

¹³³Cs

Nombor jisim	133
nombor neutron	78
Jisim Atom Relatif	132.905451958 ± 0.000000008 Da
g-factor	0.73651428571429 ± 0.0004
natural abundance	100
Reputan radioaktif	Isotop stabil
setengah hayat	Not Radioactive ☢️
Spin	7/2
nuclear quadrupole moment	-0.00343 ± 0.0001
tarikh penemuan	1921
parity	+

¹³⁴Cs

Nombor jisim	134
nombor neutron	79
Jisim Atom Relatif	133.906718501 ± 0.000000017 Da
g-factor	0.747325 ± 0.00035
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	2.065 ± 0.0004 y
Spin	4
nuclear quadrupole moment	0.37 ± 0.02
tarikh penemuan	1940
parity	+

decay mode	Keamatan (fizik)
β⁻ (β⁻ decay)	100%
ϵ (electron capture)	0.0003%

¹³⁵Cs

Nombor jisim	135
nombor neutron	80
Jisim Atom Relatif	134.905976907 ± 0.00000039 Da
g-factor	0.77951428571429 ± 0.00037142857142857
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	1.33 ± 0.19 My
Spin	7/2
nuclear quadrupole moment	0.048 ± 0.003
tarikh penemuan	1949
parity	+

decay mode	Keamatan (fizik)
β⁻ (β⁻ decay)	100%

¹³⁶Cs

Nombor jisim	136
nombor neutron	81
Jisim Atom Relatif	135.907311431 ± 0.00000201 Da
g-factor	0.741 ± 0.003
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	13.01 ± 0.05 d
Spin	5
nuclear quadrupole moment	0.213 ± 0.015
tarikh penemuan	1951
parity	+

decay mode	Keamatan (fizik)
β⁻ (β⁻ decay)	100%

¹³⁷Cs

Nombor jisim	137
nombor neutron	82
Jisim Atom Relatif	136.907089296 ± 0.000000324 Da
g-factor	0.81068571428571 ± 0.0004
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	30.04 ± 0.04 y
Spin	7/2
nuclear quadrupole moment	0.048 ± 0.002
tarikh penemuan	1951
parity	+

decay mode	Keamatan (fizik)
β⁻ (β⁻ decay)	100%

¹³⁸Cs

Nombor jisim	138
nombor neutron	83
Jisim Atom Relatif	137.911017119 ± 0.000009831 Da
g-factor	0.233 ± 0.0013333333333333
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	33.5 ± 0.2 m
Spin	3
nuclear quadrupole moment	0.112 ± 0.017
tarikh penemuan	1943
parity	-

decay mode	Keamatan (fizik)
β⁻ (β⁻ decay)	100%

¹³⁹Cs

Nombor jisim	139
nombor neutron	84
Jisim Atom Relatif	138.913363822 ± 0.000003364 Da
g-factor	0.768 ± 0.0011428571428571
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	9.27 ± 0.05 m
Spin	7/2
nuclear quadrupole moment	-0.063 ± 0.014
tarikh penemuan	1939
parity	+

decay mode	Keamatan (fizik)
β⁻ (β⁻ decay)	100%

¹⁴⁰Cs

Nombor jisim	140
nombor neutron	85
Jisim Atom Relatif	139.917283707 ± 0.000008801 Da
g-factor	0.134 ± 0.001
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	63.7 ± 0.3 s
Spin	1
nuclear quadrupole moment	-0.094 ± 0.015
tarikh penemuan	1950
parity	-

decay mode	Keamatan (fizik)
β⁻ (β⁻ decay)	100%

¹⁴¹Cs

Nombor jisim	141
nombor neutron	86
Jisim Atom Relatif	140.920045279 ± 0.000009871 Da
g-factor	0.69457142857143 ± 0.0028571428571429
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	24.84 ± 0.16 s
Spin	7/2
nuclear quadrupole moment	-0.42 ± 0.07
tarikh penemuan	1962
parity	+

decay mode	Keamatan (fizik)
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	0.0342%

¹⁴²Cs

Nombor jisim	142
nombor neutron	87
Jisim Atom Relatif	141.924299514 ± 0.000007586 Da
g-factor	0
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	1.687 ± 0.01 s
Spin	0
nuclear quadrupole moment	0
tarikh penemuan	1962
parity	-

decay mode	Keamatan (fizik)
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	0.089%

¹⁴³Cs

Nombor jisim	143
nombor neutron	88
Jisim Atom Relatif	142.927347346 ± 0.00000813 Da
g-factor	0.57933333333333 ± 0.0026666666666667
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	1.802 ± 0.008 s
Spin	3/2
nuclear quadrupole moment	0.44 ± 0.03
tarikh penemuan	1962
parity	+

decay mode	Keamatan (fizik)
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	1.62%

¹⁴⁴Cs

Nombor jisim	144
nombor neutron	89
Jisim Atom Relatif	143.932075402 ± 0.000021612 Da
g-factor	-0.545 ± 0.003
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	994 ± 6 ms
Spin	1
nuclear quadrupole moment	0.29 ± 0.02
tarikh penemuan	1967
parity	-

decay mode	Keamatan (fizik)
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	2.98%

¹⁴⁵Cs

Nombor jisim	145
nombor neutron	90
Jisim Atom Relatif	144.935528927 ± 0.000009733 Da
g-factor	0.522 ± 0.0026666666666667
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	582 ± 4 ms
Spin	3/2
nuclear quadrupole moment	0.58 ± 0.06
tarikh penemuan	1971
parity	+

decay mode	Keamatan (fizik)
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	12.8%

¹⁴⁶Cs

Nombor jisim	146
nombor neutron	91
Jisim Atom Relatif	145.940621867 ± 0.000003106 Da
g-factor	-0.514 ± 0.002
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	321.6 ± 0.9 ms
Spin	1
nuclear quadrupole moment	0.21 ± 0.03
tarikh penemuan	1971
parity	-

decay mode	Keamatan (fizik)
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	14.2%
2n (2-neutron emission)

¹⁴⁷Cs

Nombor jisim	147
nombor neutron	92
Jisim Atom Relatif	146.944261512 ± 0.000009 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	230.5 ± 0.9 ms
Spin	3/2
nuclear quadrupole moment
tarikh penemuan	1978
parity	+

decay mode	Keamatan (fizik)
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	28.5%

¹⁴⁸Cs

Nombor jisim	148
nombor neutron	93
Jisim Atom Relatif	147.949639026 ± 0.000014 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	151.8 ± 1 ms
Spin	2
nuclear quadrupole moment
tarikh penemuan	1978
parity	-

decay mode	Keamatan (fizik)
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	28.7%
2n (2-neutron emission)

¹⁴⁹Cs

Nombor jisim	149
nombor neutron	94
Jisim Atom Relatif	148.953516 ± 0.000429 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	112.3 ± 2.5 ms
Spin	3/2
nuclear quadrupole moment
tarikh penemuan	1979
parity	+

decay mode	Keamatan (fizik)
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	25%
2n (2-neutron emission)

¹⁵⁰Cs

Nombor jisim	150
nombor neutron	95
Jisim Atom Relatif	149.959023 ± 0.000429 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	81 ± 2.6 ms
Spin	2
nuclear quadrupole moment
tarikh penemuan	1979
parity	-

decay mode	Keamatan (fizik)
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	44%
2n (2-neutron emission)

¹⁵¹Cs

Nombor jisim	151
nombor neutron	96
Jisim Atom Relatif	150.963199 ± 0.000537 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	59 ± 19 ms
Spin	3/2
nuclear quadrupole moment
tarikh penemuan	1979
parity	+

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

¹⁵²Cs

Nombor jisim	152
nombor neutron	97
Jisim Atom Relatif	151.968728 ± 0.000537 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat
Spin
nuclear quadrupole moment
tarikh penemuan	1987
parity

decay mode	Keamatan (fizik)
β⁻ (β⁻ decay)
β⁻ n (β⁻-delayed neutron emission)

sejarah

penemu atau pereka	Gustov Kirchoff, Robert Bunsen
tempat penemuan	Germany
tarikh penemuan	1860
Etimologi	Latin: coesius (sky blue); for the blue lines of its spectrum.
sebutan	SEE-zi-em (Inggeris)

sumber

Abundance
Abundance in Earth's crust	3 mg/kg
natural abundance (lautan)	0.0003 mg/L
natural abundance (Tubuh manusia)	0.000002 %
natural abundance (Meteoroid)	0.000014 %
natural abundance (Matahari)	0.0000008 %
Abundance in Universe	0.00000008 %

Nuclear Screening Constants

1	s	1.0957
2	p	4.1804
2	s	14.4884
3	d	14.0194
3	p	18.4222
3	s	18.6226
4	d	32.1616
4	p	29.1424
4	s	27.9576
5	p	41.349
5	s	39.5555
6	s	48.637

Sesium on ChemicalAid

Cannabis Database ID	006361
ChEBI ID	30514
ChemSpider ID	4510778
Common Procurement Vocabulary	14771000
DSSTOX compound identifier	DTXCID40820345
DrugBank ID	15392
ECHA Substance Infocard ID	100.028.323
HSDB ID	7040
Hrvatska enciklopedija ID	11373
Human Metabolome Database ID	HMDB0013669
ID AGROVOC	c_1182
ID BnF	121655651
ID CAB	18776
ID Den Store Danske	cæsium
ID Encyclopædia Universalis	cesium
ID Ensiklopedia Besar Rusia dalam talian	4674014
ID Ensiklopedia Britannica Dalam Talian	science/cesium
ID Freebase	/m/025tnb6
ID GND	4147131-3
ID Gran Enciclopèdia Catalana	0090224
ID J9U Perpustakaan Negara Israel	987007284955105171
ID KBpedia	Cesium
ID NE.se	cesium
ID NKCR AUT	ph124977
ID PSH	5748
ID Perbendaharaan Kata Pendidikan Australia	scot/3063
ID Store norske leksikon	cesium
ID Tesaurus BNCF	22890
ID Treccani	cesio
ID Vikidia Perancis	Césium
ID WordNet 3.1 Synset	14658410-n
ID YSO	16504
ID bahan DSSTox	DTXSID5036767
ID dalam talian Brockhaus Enzyklopädie	cäsium
ID kewibawaan Perpustakaan Kongres	sh85022200
ID pemerihal MeSH	D002586
ID topik Quora	Cesium
InChI	InChI=1S/Cs
InChIKey	TVFDJXOCXUVLDH-UHFFFAOYSA-N
Krugosvet article	himiya/ceziy
Maksud Tertakrif OmegaWiki	470
OpenAlex ID	C519659679
PubChem CID	5354618
RxNorm ID	1310121
UNII	1KSV9V4Y4I
USGS Thesaurus ID	1424
ZVG number	7550
nombor pendaftaran CAS	7440-46-2
pengecam AAT	300380498
pengecam NDL	00570840

Sesium (Cs)

Sifat Fizikal

Sifat Kimia

other

Isotopes of Cesium

111Cs

112Cs

113Cs

114Cs

115Cs

116Cs

117Cs

118Cs

119Cs

120Cs

121Cs

122Cs

123Cs

124Cs

125Cs

126Cs

127Cs

128Cs

129Cs

130Cs

131Cs

132Cs

133Cs

134Cs

135Cs

136Cs

137Cs

138Cs

139Cs

140Cs

141Cs

142Cs

143Cs

144Cs

145Cs

146Cs

147Cs

148Cs

149Cs

150Cs

151Cs

152Cs

sejarah

sumber

Nuclear Screening Constants

¹¹¹Cs

¹¹²Cs

¹¹³Cs

¹¹⁴Cs

¹¹⁵Cs

¹¹⁶Cs

¹¹⁷Cs

¹¹⁸Cs

¹¹⁹Cs

¹²⁰Cs

¹²¹Cs

¹²²Cs

¹²³Cs

¹²⁴Cs

¹²⁵Cs

¹²⁶Cs

¹²⁷Cs

¹²⁸Cs

¹²⁹Cs

¹³⁰Cs

¹³¹Cs

¹³²Cs

¹³³Cs

¹³⁴Cs

¹³⁵Cs

¹³⁶Cs

¹³⁷Cs

¹³⁸Cs

¹³⁹Cs

¹⁴⁰Cs

¹⁴¹Cs

¹⁴²Cs

¹⁴³Cs

¹⁴⁴Cs

¹⁴⁵Cs

¹⁴⁶Cs

¹⁴⁷Cs

¹⁴⁸Cs

¹⁴⁹Cs

¹⁵⁰Cs

¹⁵¹Cs

¹⁵²Cs