Strontium

Strontium (Sr)

chemical element with symbol Sr and atomic number 38
Atomic Number38
Atomic Weight87.62
Massagetal88
Group2
Period5
Blocks
proton38 p+
neutron50 n0
elektron38 e-
Animated Bohr model of Sr (Strontium)

Physical Property

Atoomradius
200 pm
molar volume
Covalent Radius
185 pm
Metallic Radius
191 pm
Ioonradius
118 pm
Crystal Radius
132 pm
Van der Waals radius
249 pm
density
2,64 g/cm³
Atomic Radii Of The Elements: Strontium0255075100125150175200225250pmAtoomradiusCovalent RadiusMetallic RadiusVan der Waals radius

Chemical Property

energie
proton affinity
electron affinity
ionization energy
5,6948672 eV/particle
ionization energy of Sr (Strontium)
Verdampingswarmte
144 kJ/mol
smeltingswarmte
9,2 kJ/mol
Vormingsentalpie
164 kJ/mol
elektron
Elektronskil2, 8, 18, 8, 2
Bohr model: Sr (Strontium)
Valenselektrone2
Lewisteorie: Sr (Strontium)
elektronkonfigurasie[Kr] 5s2
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2
Enhanced Bohr model of Sr (Strontium)
Orbital Diagram of Sr (Strontium)
Oksidasietoestand1, 2
Elektronegatiwiteit
0.95
Electrophilicity Index
0,730062406922635 eV/particle
fundamental state of matter
phase of matterSolid
gaseous state of matter
Boiling Point
1 650,15 K
Melting Point
1 050,15 K
critical pressure
critical temperature
triple point
appearance
kleur
Silver
appearance
Brekingsindeks
thermodynamic material property
Thermal Conductivity
thermal expansion
0,0000225 1/K
molar heat capacity
26,79 J/(mol K)
Specific Heat Capacity
0,306 J/(g⋅K)
heat capacity ratio
electrical properties
typeConductor
Geleidingsvermoë
7,7 MS/m
Elektriese resistiwiteit
0,00000013 m Ω
superconductivity
Magnetisme
typeparamagnetic
magnetic susceptibility (Mass)
0,00000000132 m³/Kg
magnetic susceptibility (Molar)
0,000000000116 m³/mol
magnetic susceptibility (Volume)
0,00000347
magnetic ordering
Curie temperature
Néel temperature
structure
Crystal StructureFace Centered Cubic (FCC)
lattice constant
6,08 Å
Lattice Anglesπ/2, π/2, π/2
mechanical property
hardness
1,5 MPa
Massamodulus
Skuifmodulus
6,1 GPa
Young se modulus
Poisson se verhouding
0,28
Spoed van klank
classification
CategoryAlkaline earth metals, Alkaline earth metals
CAS GroupIIA
IUPAC GroupIIA
Glawe Number15
Mendeleev Number8
Pettifor Number15
Geochemical Classalkaline earth metal
Goldschmidt classificationlitophile

other

Gas Basicity
polarizability
197,2 ± 0,2 a₀
C6 Dispersion Coefficient
3 175 a₀
allotrope
Neutron cross section
1,2
Neutron Mass Absorption
0,0005
quantum number1S0
Ruimtegroep225 (Fm_3m)

Isotopes of Strontium

Stable Isotopes3
Unstable Isotopes32
Natural Isotopes4
Isotopic Composition8882.58%8882.58%869.86%869.86%877.00%877.00%840.56%840.56%

73Sr

Massagetal73
neutron number35
relative atomic mass
72,9657 ± 0,00043 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
25,3 ± 1,4 ms
spin5/2
nuclear quadrupole moment
ontdekkingsdatum1993
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
β+ p (β+-delayed proton emission)63%

74Sr

Massagetal74
neutron number36
relative atomic mass
73,95617 ± 0,000107 Da
g-factor
0
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
27,6 ± 2,6 ms
spin0
nuclear quadrupole moment
0
ontdekkingsdatum1995
parity+

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

75Sr

Massagetal75
neutron number37
relative atomic mass
74,949952767 ± 0,000236183 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
85,2 ± 2,3 ms
spin3/2
nuclear quadrupole moment
ontdekkingsdatum1991
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
β+ p (β+-delayed proton emission)5.2%

76Sr

Massagetal76
neutron number38
relative atomic mass
75,94176276 ± 0,000037 Da
g-factor
0
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
7,89 ± 0,07 s
spin0
nuclear quadrupole moment
0
ontdekkingsdatum1990
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
β+ p (β+-delayed proton emission)3.4%

77Sr

Massagetal77
neutron number39
relative atomic mass
76,937945454 ± 0,0000085 Da
g-factor
-0,1392 ± 0,0016
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
9 ± 0,2 s
spin5/2
nuclear quadrupole moment
1,27 ± 0,05
ontdekkingsdatum1976
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
β+ p (β+-delayed proton emission)0.08%

78Sr

Massagetal78
neutron number40
relative atomic mass
77,932179979 ± 0,000008 Da
g-factor
0
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
156,1 ± 2,7 s
spin0
nuclear quadrupole moment
0
ontdekkingsdatum1982
parity+

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

79Sr

Massagetal79
neutron number41
relative atomic mass
78,929704692 ± 0,000007967 Da
g-factor
-0,316 ± 0,0026666666666667
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
2,25 ± 0,1 m
spin3/2
nuclear quadrupole moment
0,661 ± 0,006
ontdekkingsdatum1972
parity-

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

80Sr

Massagetal80
neutron number42
relative atomic mass
79,924517538 ± 0,000003718 Da
g-factor
0
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
106,3 ± 1,5 m
spin0
nuclear quadrupole moment
0
ontdekkingsdatum1961
parity+

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

81Sr

Massagetal81
neutron number43
relative atomic mass
80,923211393 ± 0,000003358 Da
g-factor
1,086 ± 0,008
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
22,3 ± 0,4 m
spin1/2
nuclear quadrupole moment
0
ontdekkingsdatum1952
parity-

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

82Sr

Massagetal82
neutron number44
relative atomic mass
81,918399845 ± 0,000006432 Da
g-factor
0
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
25,35 ± 0,03 d
spin0
nuclear quadrupole moment
0
ontdekkingsdatum1952
parity+

decay modeintensity
ϵ (electron capture)100%

83Sr

Massagetal83
neutron number45
relative atomic mass
82,917554372 ± 0,000007336 Da
g-factor
-0,237 ± 0,0002
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
32,41 ± 0,03 h
spin7/2
nuclear quadrupole moment
0,708 ± 0,011
ontdekkingsdatum1952
parity+

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

84Sr

Massagetal84
neutron number46
relative atomic mass
83,913419118 ± 0,000001334 Da
g-factor
0
natural abundance
0,56 ± 0,02
radioaktiwiteit☢️ radioactive element
Halfleeftyd
spin0
nuclear quadrupole moment
0
ontdekkingsdatum1936
parity+

decay modeintensity
+ (double β+ decay)

85Sr

Massagetal85
neutron number47
relative atomic mass
84,912932041 ± 0,00000302 Da
g-factor
-0,22224444444444 ± 0,00015555555555556
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
64,846 ± 0,006 d
spin9/2
nuclear quadrupole moment
0,263 ± 0,014
ontdekkingsdatum1940
parity+

decay modeintensity
ϵ (electron capture)100%

86Sr

Massagetal86
neutron number48
relative atomic mass
85,90926072473 ± 0,00000000563 Da
g-factor
0
natural abundance
9,86 ± 0,2
radioaktiwiteitStabiele isotoop
HalfleeftydNot Radioactive ☢️
spin0
nuclear quadrupole moment
0
ontdekkingsdatum1931
parity+

87Sr

Massagetal87
neutron number49
relative atomic mass
86,90887749454 ± 0,0000000055 Da
g-factor
-0,24292444444444 ± 0,000024444444444444
natural abundance
7 ± 0,2
radioaktiwiteitStabiele isotoop
HalfleeftydNot Radioactive ☢️
spin9/2
nuclear quadrupole moment
0,305 ± 0,002
ontdekkingsdatum1931
parity+

88Sr

Massagetal88
neutron number50
relative atomic mass
87,905612253 ± 0,000000006 Da
g-factor
0
natural abundance
82,58 ± 0,35
radioaktiwiteitStabiele isotoop
HalfleeftydNot Radioactive ☢️
spin0
nuclear quadrupole moment
0
ontdekkingsdatum1923
parity+

89Sr

Massagetal89
neutron number51
relative atomic mass
88,907450808 ± 0,000000098 Da
g-factor
-0,4592 ± 0,0008
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
50,563 ± 0,025 d
spin5/2
nuclear quadrupole moment
-0,253 ± 0,008
ontdekkingsdatum1937
parity+

decay modeintensity
β (β decay)100%

90Sr

Massagetal90
neutron number52
relative atomic mass
89,90772787 ± 0,000001555 Da
g-factor
0
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
28,91 ± 0,03 y
spin0
nuclear quadrupole moment
0
ontdekkingsdatum1948
parity+

decay modeintensity
β (β decay)100%

91Sr

Massagetal91
neutron number53
relative atomic mass
90,910195942 ± 0,000005853 Da
g-factor
-0,354 ± 0,0008
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
9,65 ± 0,06 h
spin5/2
nuclear quadrupole moment
0,042 ± 0,01
ontdekkingsdatum1943
parity+

decay modeintensity
β (β decay)100%

92Sr

Massagetal92
neutron number54
relative atomic mass
91,911038222 ± 0,000003675 Da
g-factor
0
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
2,611 ± 0,017 h
spin0
nuclear quadrupole moment
0
ontdekkingsdatum1956
parity+

decay modeintensity
β (β decay)100%

93Sr

Massagetal93
neutron number55
relative atomic mass
92,914024314 ± 0,000008109 Da
g-factor
-0,3172 ± 0,0008
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
7,43 ± 0,03 m
spin5/2
nuclear quadrupole moment
0,24 ± 0,01
ontdekkingsdatum1959
parity+

decay modeintensity
β (β decay)100%

94Sr

Massagetal94
neutron number56
relative atomic mass
93,915355641 ± 0,000001785 Da
g-factor
0
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
75,3 ± 0,2 s
spin0
nuclear quadrupole moment
0
ontdekkingsdatum1959
parity+

decay modeintensity
β (β decay)100%

95Sr

Massagetal95
neutron number57
relative atomic mass
94,919358282 ± 0,000006237 Da
g-factor
-1,074 ± 0,004
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
23,9 ± 0,14 s
spin1/2
nuclear quadrupole moment
0
ontdekkingsdatum1961
parity+

decay modeintensity
β (β decay)100%

96Sr

Massagetal96
neutron number58
relative atomic mass
95,921719045 ± 0,000009089 Da
g-factor
0
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
1,059 ± 0,008 s
spin0
nuclear quadrupole moment
0
ontdekkingsdatum1971
parity+

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

97Sr

Massagetal97
neutron number59
relative atomic mass
96,926375621 ± 0,000003633 Da
g-factor
-0,996 ± 0,004
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
432 ± 4 ms
spin1/2
nuclear quadrupole moment
0
ontdekkingsdatum1978
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)0.02%

98Sr

Massagetal98
neutron number60
relative atomic mass
97,928692636 ± 0,000003463 Da
g-factor
0
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
653 ± 2 ms
spin0
nuclear quadrupole moment
0
ontdekkingsdatum1971
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)0.23%

99Sr

Massagetal99
neutron number61
relative atomic mass
98,932883604 ± 0,000005085 Da
g-factor
-0,174 ± 0,0033333333333333
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
269,2 ± 1 ms
spin3/2
nuclear quadrupole moment
0,76 ± 0,04
ontdekkingsdatum1975
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)0.1%

100Sr

Massagetal100
neutron number62
relative atomic mass
99,93578327 ± 0,000007426 Da
g-factor
0
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
202,1 ± 1,7 ms
spin0
nuclear quadrupole moment
0
ontdekkingsdatum1978
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)1.11%

101Sr

Massagetal101
neutron number63
relative atomic mass
100,940606264 ± 0,000009103 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
113,7 ± 1,7 ms
spin5/2
nuclear quadrupole moment
ontdekkingsdatum1983
parity-

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)2.75%

102Sr

Massagetal102
neutron number64
relative atomic mass
101,944004679 ± 0,000072 Da
g-factor
0
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
69 ± 6 ms
spin0
nuclear quadrupole moment
0
ontdekkingsdatum1986
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)5.5%

103Sr

Massagetal103
neutron number65
relative atomic mass
102,949243 ± 0,000215 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
53 ± 10 ms
spin5/2
nuclear quadrupole moment
ontdekkingsdatum1997
parity+

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

104Sr

Massagetal104
neutron number66
relative atomic mass
103,953022 ± 0,000322 Da
g-factor
0
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
50,6 ± 4,2 ms
spin0
nuclear quadrupole moment
0
ontdekkingsdatum1997
parity+

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

105Sr

Massagetal105
neutron number67
relative atomic mass
104,959001 ± 0,000537 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
39 ± 5 ms
spin5/2
nuclear quadrupole moment
ontdekkingsdatum1997
parity+

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

106Sr

Massagetal106
neutron number68
relative atomic mass
105,963177 ± 0,000644 Da
g-factor
0
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
21 ± 8 ms
spin0
nuclear quadrupole moment
0
ontdekkingsdatum2010
parity+

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

107Sr

Massagetal107
neutron number69
relative atomic mass
106,969672 ± 0,000751 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
spin1/2
nuclear quadrupole moment
0
ontdekkingsdatum2010
parity+

decay modeintensity
β (β decay)
β n (β-delayed neutron emission)
2n (2-neutron emission)
Strontium destilled crystals

geskiedenis

Ontdek deurA. Crawford
ligging van ontdekkingScotland
ontdekkingsdatum1790
etimologieFrom the Scottish town, Strontian.
uitspraakSTRON-she-em (Engels)

source

Abundance
Abundance in Earth's crust
370 mg/kg
natural abundance (oseaan)
7,9 mg/L
natural abundance (human body)
0,00046 %
natural abundance (Meteoroïde)
0,00087 %
natural abundance (Son)
0,000005 %
Abundance in Universe
0,000004 %

Nuclear Screening Constants

1s0.8089
2p3.9696
2s10.0982
3d15.2738
3p15.8324
3s15.3362
4p26.068
4s24.5556
5s31.9295