Estronci

Estronci (Sr)

chemical element with symbol Sr and atomic number 38
Atomic Number38
Atomic Weight87.62
Rhif màs88
Group2
Period5
Blocks
Proton38 p+
Niwtron50 n0
Electron38 e-
Animated Bohr model of Sr (Estronci)

Nodwedd Ffisegol

Atomic Radius
200 pm
molar volume
covalent radius
185 pm
Metallic Radius
191 pm
ionic radius
118 pm
Crystal Radius
132 pm
Van der Waals radius
249 pm
density
2.64 g/cm³
Atomic Radii Of The Elements: Estronci0102030405060708090100110120130140150160170180190200210220230240250pmAtomic RadiusCovalent RadiusMetallic RadiusVan der Waals radius

Nodwedd Gemegol

egni
proton affinity
electron affinity
ionization energy
5.6948672 eV/particle
ionization energy of Sr (Estronci)
enthalpy of vaporization
144 kJ/mol
enthalpy of fusion
9.2 kJ/mol
standard enthalpy of formation
164 kJ/mol
Electron
plisgyn yr electron2, 8, 18, 8, 2
Bohr model: Sr (Estronci)
valence electron2
Lewis structure: Sr (Estronci)
trefn yr electronnau[Kr] 5s2
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2
Enhanced Bohr model of Sr (Estronci)
Orbital Diagram of Sr (Estronci)
Cyflwr ocsidiad1, 2
Electronegatifedd
0.95
Electrophilicity Index
0.730062406922635 eV/particle
cyflwr sylfaenol mater
cyflwr materSolid
gaseous state of matter
Boiling Point
1,650.15 K
Melting Point
1,050.15 K
critical pressure
critical temperature
triple point
appearance
lliw
Silver
appearance
Mynegrif plygiant
nodwedd ffisegol gwrthrych
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
dargludedd trydanol
7.7 MS/m
Gwrthedd
0.00000013 m Ω
superconductivity
magnetism
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
strwythur
Crystal StructureFace Centered Cubic (FCC)
lattice constant
6.08 Å
Lattice Anglesπ/2, π/2, π/2
nodwedd mecanyddol deunyddiau
hardness
1.5 MPa
bulk modulus
shear modulus
6.1 GPa
Young's modulus
Poisson's ratio
0.28
speed of sound
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
space group225 (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

Rhif màs73
neutron number35
relative atomic mass
72.9657 ± 0.00043 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
25.3 ± 1.4 ms
spin5/2
nuclear quadrupole moment
dyddiad darganfod1993
parity-

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

74Sr

Rhif màs74
neutron number36
relative atomic mass
73.95617 ± 0.000107 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
27.6 ± 2.6 ms
spin0
nuclear quadrupole moment
0
dyddiad darganfod1995
parity+

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

75Sr

Rhif màs75
neutron number37
relative atomic mass
74.949952767 ± 0.000236183 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
85.2 ± 2.3 ms
spin3/2
nuclear quadrupole moment
dyddiad darganfod1991
parity-

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

76Sr

Rhif màs76
neutron number38
relative atomic mass
75.94176276 ± 0.000037 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
7.89 ± 0.07 s
spin0
nuclear quadrupole moment
0
dyddiad darganfod1990
parity+

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

77Sr

Rhif màs77
neutron number39
relative atomic mass
76.937945454 ± 0.0000085 Da
g-factor
-0.1392 ± 0.0016
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
9 ± 0.2 s
spin5/2
nuclear quadrupole moment
1.27 ± 0.05
dyddiad darganfod1976
parity+

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

78Sr

Rhif màs78
neutron number40
relative atomic mass
77.932179979 ± 0.000008 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
156.1 ± 2.7 s
spin0
nuclear quadrupole moment
0
dyddiad darganfod1982
parity+

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

79Sr

Rhif màs79
neutron number41
relative atomic mass
78.929704692 ± 0.000007967 Da
g-factor
-0.316 ± 0.0026666666666667
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
2.25 ± 0.1 m
spin3/2
nuclear quadrupole moment
0.661 ± 0.006
dyddiad darganfod1972
parity-

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

80Sr

Rhif màs80
neutron number42
relative atomic mass
79.924517538 ± 0.000003718 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
106.3 ± 1.5 m
spin0
nuclear quadrupole moment
0
dyddiad darganfod1961
parity+

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

81Sr

Rhif màs81
neutron number43
relative atomic mass
80.923211393 ± 0.000003358 Da
g-factor
1.086 ± 0.008
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
22.3 ± 0.4 m
spin1/2
nuclear quadrupole moment
0
dyddiad darganfod1952
parity-

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

82Sr

Rhif màs82
neutron number44
relative atomic mass
81.918399845 ± 0.000006432 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
25.35 ± 0.03 d
spin0
nuclear quadrupole moment
0
dyddiad darganfod1952
parity+

decay modeintensity
ϵ (electron capture)100%

83Sr

Rhif màs83
neutron number45
relative atomic mass
82.917554372 ± 0.000007336 Da
g-factor
-0.237 ± 0.0002
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
32.41 ± 0.03 h
spin7/2
nuclear quadrupole moment
0.708 ± 0.011
dyddiad darganfod1952
parity+

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

84Sr

Rhif màs84
neutron number46
relative atomic mass
83.913419118 ± 0.000001334 Da
g-factor
0
natural abundance
0.56 ± 0.02
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin0
nuclear quadrupole moment
0
dyddiad darganfod1936
parity+

decay modeintensity
+ (double β+ decay)

85Sr

Rhif màs85
neutron number47
relative atomic mass
84.912932041 ± 0.00000302 Da
g-factor
-0.22224444444444 ± 0.00015555555555556
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
64.846 ± 0.006 d
spin9/2
nuclear quadrupole moment
0.263 ± 0.014
dyddiad darganfod1940
parity+

decay modeintensity
ϵ (electron capture)100%

86Sr

Rhif màs86
neutron number48
relative atomic mass
85.90926072473 ± 0.00000000563 Da
g-factor
0
natural abundance
9.86 ± 0.2
Dadfeilio ymbelydrolstable isotope
Hanner oesNot Radioactive ☢️
spin0
nuclear quadrupole moment
0
dyddiad darganfod1931
parity+

87Sr

Rhif màs87
neutron number49
relative atomic mass
86.90887749454 ± 0.0000000055 Da
g-factor
-0.24292444444444 ± 0.000024444444444444
natural abundance
7 ± 0.2
Dadfeilio ymbelydrolstable isotope
Hanner oesNot Radioactive ☢️
spin9/2
nuclear quadrupole moment
0.305 ± 0.002
dyddiad darganfod1931
parity+

88Sr

Rhif màs88
neutron number50
relative atomic mass
87.905612253 ± 0.000000006 Da
g-factor
0
natural abundance
82.58 ± 0.35
Dadfeilio ymbelydrolstable isotope
Hanner oesNot Radioactive ☢️
spin0
nuclear quadrupole moment
0
dyddiad darganfod1923
parity+

89Sr

Rhif màs89
neutron number51
relative atomic mass
88.907450808 ± 0.000000098 Da
g-factor
-0.4592 ± 0.0008
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
50.563 ± 0.025 d
spin5/2
nuclear quadrupole moment
-0.253 ± 0.008
dyddiad darganfod1937
parity+

decay modeintensity
β (β decay)100%

90Sr

Rhif màs90
neutron number52
relative atomic mass
89.90772787 ± 0.000001555 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
28.91 ± 0.03 y
spin0
nuclear quadrupole moment
0
dyddiad darganfod1948
parity+

decay modeintensity
β (β decay)100%

91Sr

Rhif màs91
neutron number53
relative atomic mass
90.910195942 ± 0.000005853 Da
g-factor
-0.354 ± 0.0008
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
9.65 ± 0.06 h
spin5/2
nuclear quadrupole moment
0.042 ± 0.01
dyddiad darganfod1943
parity+

decay modeintensity
β (β decay)100%

92Sr

Rhif màs92
neutron number54
relative atomic mass
91.911038222 ± 0.000003675 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
2.611 ± 0.017 h
spin0
nuclear quadrupole moment
0
dyddiad darganfod1956
parity+

decay modeintensity
β (β decay)100%

93Sr

Rhif màs93
neutron number55
relative atomic mass
92.914024314 ± 0.000008109 Da
g-factor
-0.3172 ± 0.0008
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
7.43 ± 0.03 m
spin5/2
nuclear quadrupole moment
0.24 ± 0.01
dyddiad darganfod1959
parity+

decay modeintensity
β (β decay)100%

94Sr

Rhif màs94
neutron number56
relative atomic mass
93.915355641 ± 0.000001785 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
75.3 ± 0.2 s
spin0
nuclear quadrupole moment
0
dyddiad darganfod1959
parity+

decay modeintensity
β (β decay)100%

95Sr

Rhif màs95
neutron number57
relative atomic mass
94.919358282 ± 0.000006237 Da
g-factor
-1.074 ± 0.004
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
23.9 ± 0.14 s
spin1/2
nuclear quadrupole moment
0
dyddiad darganfod1961
parity+

decay modeintensity
β (β decay)100%

96Sr

Rhif màs96
neutron number58
relative atomic mass
95.921719045 ± 0.000009089 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
1.059 ± 0.008 s
spin0
nuclear quadrupole moment
0
dyddiad darganfod1971
parity+

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

97Sr

Rhif màs97
neutron number59
relative atomic mass
96.926375621 ± 0.000003633 Da
g-factor
-0.996 ± 0.004
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
432 ± 4 ms
spin1/2
nuclear quadrupole moment
0
dyddiad darganfod1978
parity+

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

98Sr

Rhif màs98
neutron number60
relative atomic mass
97.928692636 ± 0.000003463 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
653 ± 2 ms
spin0
nuclear quadrupole moment
0
dyddiad darganfod1971
parity+

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

99Sr

Rhif màs99
neutron number61
relative atomic mass
98.932883604 ± 0.000005085 Da
g-factor
-0.174 ± 0.0033333333333333
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
269.2 ± 1 ms
spin3/2
nuclear quadrupole moment
0.76 ± 0.04
dyddiad darganfod1975
parity+

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

100Sr

Rhif màs100
neutron number62
relative atomic mass
99.93578327 ± 0.000007426 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
202.1 ± 1.7 ms
spin0
nuclear quadrupole moment
0
dyddiad darganfod1978
parity+

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

101Sr

Rhif màs101
neutron number63
relative atomic mass
100.940606264 ± 0.000009103 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
113.7 ± 1.7 ms
spin5/2
nuclear quadrupole moment
dyddiad darganfod1983
parity-

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

102Sr

Rhif màs102
neutron number64
relative atomic mass
101.944004679 ± 0.000072 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
69 ± 6 ms
spin0
nuclear quadrupole moment
0
dyddiad darganfod1986
parity+

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

103Sr

Rhif màs103
neutron number65
relative atomic mass
102.949243 ± 0.000215 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
53 ± 10 ms
spin5/2
nuclear quadrupole moment
dyddiad darganfod1997
parity+

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

104Sr

Rhif màs104
neutron number66
relative atomic mass
103.953022 ± 0.000322 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
50.6 ± 4.2 ms
spin0
nuclear quadrupole moment
0
dyddiad darganfod1997
parity+

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

105Sr

Rhif màs105
neutron number67
relative atomic mass
104.959001 ± 0.000537 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
39 ± 5 ms
spin5/2
nuclear quadrupole moment
dyddiad darganfod1997
parity+

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

106Sr

Rhif màs106
neutron number68
relative atomic mass
105.963177 ± 0.000644 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
21 ± 8 ms
spin0
nuclear quadrupole moment
0
dyddiad darganfod2010
parity+

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

107Sr

Rhif màs107
neutron number69
relative atomic mass
106.969672 ± 0.000751 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin1/2
nuclear quadrupole moment
0
dyddiad darganfod2010
parity+

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

hanes

darganfyddwr neu ddyfeisiwrA. Crawford
man darganfodScotland
dyddiad darganfod1790
geirdarddiadFrom the Scottish town, Strontian.
ynganiadSTRON-she-em (Saesneg)

source

Abundance
Abundance in Earth's crust
370 mg/kg
natural abundance (cefnfor)
7.9 mg/L
natural abundance (corff dynol)
0.00046 %
natural abundance (Awyrfaen)
0.00087 %
natural abundance (Haul)
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