Sesium (Cs)

chemical element with symbol Cs and atomic number 55

Atomic Number	55
Atomic Weight	132.90545196
Massagetal	133

Group	1
Period	6
Block	s

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

Physical Property

Atoomradius	260 pm 249 pm
molar volume	70 cm³/mol
Covalent Radius	232 pm 209 pm 237 pm 244 pm
Metallic Radius	235 pm 267 pm
Ioonradius	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
Van der Waals radius	300 pm 343 pm 344 pm 343 pm 451,7 pm
density	1,873 g/cm³ 1 843 kg/m³

Chemical Property

energie

proton affinity
electron affinity	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

Verdampingswarmte	68,3 kJ/mol
smeltingswarmte	2,09 kJ/mol
Vormingsentalpie	76,5 kJ/mol
elektron

Elektronskil	2, 8, 18, 18, 8, 1

Valenselektrone	1 ⓘ

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

Oksidasietoestand	-1, 1
Elektronegatiwiteit	3,898 eV/particle 0.1542125 0.79
Electrophilicity Index	0,696095447101947 eV/particle
fundamental state of matter

phase of matter	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
appearance
kleur	Silver #ff1493 #57178f #57178f
appearance	silvery gold
Brekingsindeks
thermodynamic material property
Thermal Conductivity	35,9 W/(m K)
thermal expansion
molar heat capacity	32,21 J/(mol K)
Specific Heat Capacity	0,242 J/(g⋅K)
heat capacity ratio
electrical properties
type	Conductor
Geleidingsvermoë	5 MS/m
Elektriese resistiwiteit	0,0000002 Ω*m
superconductivity
Magnetisme
type	paramagnetic
magnetic susceptibility (Mass)	0,0000000028 m³/Kg
magnetic susceptibility (Molar)	0,000000000372 m³/mol
magnetic susceptibility (Volume)	0,00000526
magnetic ordering
Curie temperature
Néel temperature
structure
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
Massamodulus	1,6 GPa
Skuifmodulus
Young se modulus	1,7 GPa
Poisson se verhouding
Spoed van klank
classification
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
quantum number	2S1/2
Ruimtegroep	229 (Im_3m)

Isotopes of Cesium

Stable Isotopes	1
Unstable Isotopes	41
Natural Isotopes	1

¹¹¹Cs

Massagetal	111
neutron number	56
Relative Atomic Mass	110,953945 ± 0,000215 Da
g-factor
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd
spin	3/2
nuclear quadrupole moment
ontdekkingsdatum
parity	+

decay mode	intensity
p (proton emission)

¹¹²Cs

Massagetal	112
neutron number	57
Relative Atomic Mass	111,950172 ± 0,000124 Da
g-factor
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	490 ± 30 us
spin	1
nuclear quadrupole moment
ontdekkingsdatum	1994
parity	+

decay mode	intensity
p (proton emission)	100%
α (α emission)	0.26%

¹¹³Cs

Massagetal	113
neutron number	58
Relative Atomic Mass	112,944428484 ± 0,000009207 Da
g-factor
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	16,94 ± 0,09 us
spin	3/2
nuclear quadrupole moment
ontdekkingsdatum	1984
parity	+

decay mode	intensity
p (proton emission)	100%

¹¹⁴Cs

Massagetal	114
neutron number	59
Relative Atomic Mass	113,941292244 ± 0,000091323 Da
g-factor
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	570 ± 20 ms
spin	1
nuclear quadrupole moment
ontdekkingsdatum	1978
parity	+

decay mode	intensity
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

Massagetal	115
neutron number	60
Relative Atomic Mass	114,93591 ± 0,00011 Da
g-factor
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	1,4 ± 0,8 s
spin	9/2
nuclear quadrupole moment
ontdekkingsdatum	1978
parity	+

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

¹¹⁶Cs

Massagetal	116
neutron number	61
Relative Atomic Mass	115,933395 ± 0,000108 Da
g-factor
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	700 ± 40 ms
spin	1
nuclear quadrupole moment
ontdekkingsdatum	1975
parity	+

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

¹¹⁷Cs

Massagetal	117
neutron number	62
Relative Atomic Mass	116,928616723 ± 0,000067 Da
g-factor
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	8,4 ± 0,6 s
spin	9/2
nuclear quadrupole moment
ontdekkingsdatum	1972
parity	+

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

¹¹⁸Cs

Massagetal	118
neutron number	63
Relative Atomic Mass	117,926559517 ± 0,00001369 Da
g-factor	1,935 ± 0,0025
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	14 ± 2 s
spin	2
nuclear quadrupole moment	1,31 ± 0,17
ontdekkingsdatum	1969
parity	+

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

¹¹⁹Cs

Massagetal	119
neutron number	64
Relative Atomic Mass	118,922377327 ± 0,000014965 Da
g-factor	1,2111111111111 ± 0,0066666666666667
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	43 ± 0,2 s
spin	9/2
nuclear quadrupole moment	2,65 ± 0,17
ontdekkingsdatum	1969
parity	+

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

¹²⁰Cs

Massagetal	120
neutron number	65
Relative Atomic Mass	119,920677277 ± 0,000010702 Da
g-factor	1,93 ± 0,01
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	60,4 ± 0,6 s
spin	2
nuclear quadrupole moment	1,36 ± 0,07
ontdekkingsdatum	1969
parity	+

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

¹²¹Cs

Massagetal	121
neutron number	66
Relative Atomic Mass	120,917227235 ± 0,00001534 Da
g-factor	0,51266666666667 ± 0,0026666666666667
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	155 ± 4 s
spin	3/2
nuclear quadrupole moment	0,79 ± 0,04
ontdekkingsdatum	1969
parity	+

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

¹²²Cs

Massagetal	122
neutron number	67
Relative Atomic Mass	121,916108144 ± 0,000036164 Da
g-factor	0,133 ± 0,002
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	21,18 ± 0,19 s
spin	1
nuclear quadrupole moment	-0,179 ± 0,01
ontdekkingsdatum	1969
parity	+

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

¹²³Cs

Massagetal	123
neutron number	68
Relative Atomic Mass	122,91299606 ± 0,000013 Da
g-factor	2,75 ± 0,014
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	5,88 ± 0,03 m
spin	1/2
nuclear quadrupole moment	0
ontdekkingsdatum	1954
parity	+

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

¹²⁴Cs

Massagetal	124
neutron number	69
Relative Atomic Mass	123,912247366 ± 0,000009823 Da
g-factor	0,672 ± 0,003
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	30,9 ± 0,4 s
spin	1
nuclear quadrupole moment	-0,69 ± 0,04
ontdekkingsdatum	1969
parity	+

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

¹²⁵Cs

Massagetal	125
neutron number	70
Relative Atomic Mass	124,909725953 ± 0,000008304 Da
g-factor	2,814 ± 0,014
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	44,35 ± 0,29 m
spin	1/2
nuclear quadrupole moment	0
ontdekkingsdatum	1954
parity	+

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

¹²⁶Cs

Massagetal	126
neutron number	71
Relative Atomic Mass	125,909445821 ± 0,00001112 Da
g-factor	0,776 ± 0,004
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	1,64 ± 0,02 m
spin	1
nuclear quadrupole moment	-0,64 ± 0,03
ontdekkingsdatum	1954
parity	+

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

¹²⁷Cs

Massagetal	127
neutron number	72
Relative Atomic Mass	126,907417527 ± 0,000005987 Da
g-factor	2,914 ± 0,014
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	6,25 ± 0,1 h
spin	1/2
nuclear quadrupole moment	0
ontdekkingsdatum	1950
parity	+

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

¹²⁸Cs

Massagetal	128
neutron number	73
Relative Atomic Mass	127,907748452 ± 0,000005771 Da
g-factor	0,972 ± 0,005
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	3,64 ± 0,014 m
spin	1
nuclear quadrupole moment	-0,54 ± 0,03
ontdekkingsdatum	1951
parity	+

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

¹²⁹Cs

Massagetal	129
neutron number	74
Relative Atomic Mass	128,90606591 ± 0,000004888 Da
g-factor	2,978 ± 0,016
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	32,06 ± 0,06 h
spin	1/2
nuclear quadrupole moment	0
ontdekkingsdatum	1950
parity	+

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

¹³⁰Cs

Massagetal	130
neutron number	75
Relative Atomic Mass	129,906709281 ± 0,000008971 Da
g-factor	1,458 ± 0,007
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	29,21 ± 0,04 m
spin	1
nuclear quadrupole moment	-0,056 ± 0,006
ontdekkingsdatum	1952
parity	+

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

¹³¹Cs

Massagetal	131
neutron number	76
Relative Atomic Mass	130,905468457 ± 0,00000019 Da
g-factor	1,4144 ± 0,0012
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	9,689 ± 0,016 d
spin	5/2
nuclear quadrupole moment	0,59 ± 0,02
ontdekkingsdatum	1947
parity	+

decay mode	intensity
ϵ (electron capture)	100%

¹³²Cs

Massagetal	132
neutron number	77
Relative Atomic Mass	131,90643774 ± 0,000001112 Da
g-factor	1,1095 ± 0,0035
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	6,48 ± 0,006 d
spin	2
nuclear quadrupole moment	0,48 ± 0,02
ontdekkingsdatum	1953
parity	+

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

¹³³Cs

Massagetal	133
neutron number	78
Relative Atomic Mass	132,905451958 ± 0,000000008 Da
g-factor	0,73651428571429 ± 0,0004
natural abundance	100
radioaktiwiteit	Stabiele isotoop
Halfleeftyd	Not Radioactive ☢️
spin	7/2
nuclear quadrupole moment	-0,00343 ± 0,0001
ontdekkingsdatum	1921
parity	+

¹³⁴Cs

Massagetal	134
neutron number	79
Relative Atomic Mass	133,906718501 ± 0,000000017 Da
g-factor	0,747325 ± 0,00035
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	2,065 ± 0,0004 y
spin	4
nuclear quadrupole moment	0,37 ± 0,02
ontdekkingsdatum	1940
parity	+

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

¹³⁵Cs

Massagetal	135
neutron number	80
Relative Atomic Mass	134,905976907 ± 0,00000039 Da
g-factor	0,77951428571429 ± 0,00037142857142857
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	1,33 ± 0,19 My
spin	7/2
nuclear quadrupole moment	0,048 ± 0,003
ontdekkingsdatum	1949
parity	+

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

¹³⁶Cs

Massagetal	136
neutron number	81
Relative Atomic Mass	135,907311431 ± 0,00000201 Da
g-factor	0,741 ± 0,003
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	13,01 ± 0,05 d
spin	5
nuclear quadrupole moment	0,213 ± 0,015
ontdekkingsdatum	1951
parity	+

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

¹³⁷Cs

Massagetal	137
neutron number	82
Relative Atomic Mass	136,907089296 ± 0,000000324 Da
g-factor	0,81068571428571 ± 0,0004
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	30,04 ± 0,04 y
spin	7/2
nuclear quadrupole moment	0,048 ± 0,002
ontdekkingsdatum	1951
parity	+

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

¹³⁸Cs

Massagetal	138
neutron number	83
Relative Atomic Mass	137,911017119 ± 0,000009831 Da
g-factor	0,233 ± 0,0013333333333333
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	33,5 ± 0,2 m
spin	3
nuclear quadrupole moment	0,112 ± 0,017
ontdekkingsdatum	1943
parity	-

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

¹³⁹Cs

Massagetal	139
neutron number	84
Relative Atomic Mass	138,913363822 ± 0,000003364 Da
g-factor	0,768 ± 0,0011428571428571
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	9,27 ± 0,05 m
spin	7/2
nuclear quadrupole moment	-0,063 ± 0,014
ontdekkingsdatum	1939
parity	+

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

¹⁴⁰Cs

Massagetal	140
neutron number	85
Relative Atomic Mass	139,917283707 ± 0,000008801 Da
g-factor	0,134 ± 0,001
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	63,7 ± 0,3 s
spin	1
nuclear quadrupole moment	-0,094 ± 0,015
ontdekkingsdatum	1950
parity	-

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

¹⁴¹Cs

Massagetal	141
neutron number	86
Relative Atomic Mass	140,920045279 ± 0,000009871 Da
g-factor	0,69457142857143 ± 0,0028571428571429
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	24,84 ± 0,16 s
spin	7/2
nuclear quadrupole moment	-0,42 ± 0,07
ontdekkingsdatum	1962
parity	+

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

¹⁴²Cs

Massagetal	142
neutron number	87
Relative Atomic Mass	141,924299514 ± 0,000007586 Da
g-factor	0
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	1,687 ± 0,01 s
spin	0
nuclear quadrupole moment	0
ontdekkingsdatum	1962
parity	-

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

¹⁴³Cs

Massagetal	143
neutron number	88
Relative Atomic Mass	142,927347346 ± 0,00000813 Da
g-factor	0,57933333333333 ± 0,0026666666666667
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	1,802 ± 0,008 s
spin	3/2
nuclear quadrupole moment	0,44 ± 0,03
ontdekkingsdatum	1962
parity	+

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

¹⁴⁴Cs

Massagetal	144
neutron number	89
Relative Atomic Mass	143,932075402 ± 0,000021612 Da
g-factor	-0,545 ± 0,003
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	994 ± 6 ms
spin	1
nuclear quadrupole moment	0,29 ± 0,02
ontdekkingsdatum	1967
parity	-

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

¹⁴⁵Cs

Massagetal	145
neutron number	90
Relative Atomic Mass	144,935528927 ± 0,000009733 Da
g-factor	0,522 ± 0,0026666666666667
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	582 ± 4 ms
spin	3/2
nuclear quadrupole moment	0,58 ± 0,06
ontdekkingsdatum	1971
parity	+

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

¹⁴⁶Cs

Massagetal	146
neutron number	91
Relative Atomic Mass	145,940621867 ± 0,000003106 Da
g-factor	-0,514 ± 0,002
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	321,6 ± 0,9 ms
spin	1
nuclear quadrupole moment	0,21 ± 0,03
ontdekkingsdatum	1971
parity	-

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

¹⁴⁷Cs

Massagetal	147
neutron number	92
Relative Atomic Mass	146,944261512 ± 0,000009 Da
g-factor
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	230,5 ± 0,9 ms
spin	3/2
nuclear quadrupole moment
ontdekkingsdatum	1978
parity	+

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

¹⁴⁸Cs

Massagetal	148
neutron number	93
Relative Atomic Mass	147,949639026 ± 0,000014 Da
g-factor
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	151,8 ± 1 ms
spin	2
nuclear quadrupole moment
ontdekkingsdatum	1978
parity	-

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

¹⁴⁹Cs

Massagetal	149
neutron number	94
Relative Atomic Mass	148,953516 ± 0,000429 Da
g-factor
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	112,3 ± 2,5 ms
spin	3/2
nuclear quadrupole moment
ontdekkingsdatum	1979
parity	+

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

¹⁵⁰Cs

Massagetal	150
neutron number	95
Relative Atomic Mass	149,959023 ± 0,000429 Da
g-factor
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	81 ± 2,6 ms
spin	2
nuclear quadrupole moment
ontdekkingsdatum	1979
parity	-

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

¹⁵¹Cs

Massagetal	151
neutron number	96
Relative Atomic Mass	150,963199 ± 0,000537 Da
g-factor
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	59 ± 19 ms
spin	3/2
nuclear quadrupole moment
ontdekkingsdatum	1979
parity	+

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

¹⁵²Cs

Massagetal	152
neutron number	97
Relative Atomic Mass	151,968728 ± 0,000537 Da
g-factor
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd
spin
nuclear quadrupole moment
ontdekkingsdatum	1987
parity

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

geskiedenis

Ontdek deur	Gustov Kirchoff, Robert Bunsen
ligging van ontdekking	Germany
ontdekkingsdatum	1860
etimologie	Latin: coesius (sky blue); for the blue lines of its spectrum.
uitspraak	SEE-zi-em (Engels)

source

Abundance
Abundance in Earth's crust	3 mg/kg
natural abundance (oseaan)	0,0003 mg/L
natural abundance (human body)	0,000002 %
natural abundance (Meteoroïde)	0,000014 %
natural abundance (Son)	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

AGROVOC ID	c_1182
Art & Architecture Thesaurus ID	300380498
Australian Educational Vocabulary ID	scot/3063
BNCF	22890
BNF-kode	121655651
Brockhaus Enzyklopädie online ID	cäsium
CAB ID	18776
CAS Registry Number	7440-46-2
Cannabis Database ID	006361
ChEBI ID	30514
ChemSpider ID	4510778
Common Procurement Vocabulary	14771000
DSSTOX compound identifier	DTXCID40820345
DSSTox substance ID	DTXSID5036767
Den Store Danske ID	cæsium
DrugBank ID	15392
ECHA Substance Infocard ID	100.028.323
Encyclopædia Britannica Online ID	science/cesium
Encyclopædia Universalis ID	cesium
Freebase-kode	/m/025tnb6
French Vikidia ID	Césium
GND ID	4147131-3
Gran Enciclopèdia Catalana ID	0090224
Great Russian Encyclopedia Online ID	4674014
HSDB ID	7040
Hrvatska enciklopedija ID	11373
Human Metabolome Database ID	HMDB0013669
InChI	InChI=1S/Cs
InChIKey	TVFDJXOCXUVLDH-UHFFFAOYSA-N
KBpedia ID	Cesium
Krugosvet article	himiya/ceziy
LCCN	sh85022200
MeSH descriptor ID	D002586
NDL-kode	00570840
NE.se ID	cesium
NKC-kode	ph124977
National Library of Israel J9U ID	987007284955105171
OmegaWiki Defined Meaning	470
OpenAlex ID	C519659679
PSH ID	5748
PubChem CID	5354618
Quora topic ID	Cesium
RxNorm ID	1310121
Store norske leksikon ID	cesium
Treccani ID	cesio
UNII	1KSV9V4Y4I
USGS Thesaurus ID	1424
WordNet 3.1 Synset ID	14658410-n
YSO ID	16504
ZVG number	7550

Sesium (Cs)

Physical Property

Chemical Property

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

geskiedenis

source

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