Stroncij[um]

Stroncij[um] (Sr)

hemijski element sa simbolom Sr i atomskim brojem 38
Atomic Number38
Atomic Weight87.62
Maseni broj88
Group2
Period5
Blocks
Proton38 p+
Neutron50 n0
Elektron38 e-
Animated Bohrov model atoma of Sr (Stroncij[um])

Physical Property

Atomski Radijus
200 pm
Molarni volumen
covalent radius
185 pm
Metallic Radius
191 pm
Ionski radijus
118 pm
Crystal Radius
132 pm
Van der Waalsov radijus
249 pm
gustoća
2,64 g/cm³
Atomic Radii Of The Elements: Stroncij[um]0102030405060708090100110120130140150160170180190200210220230240250pmAtomski RadijusCovalent RadiusMetallic RadiusVan der Waalsov radijus

Chemical Property

energija
proton affinity
electron affinity
ionization energy
5,6948672 eV/particle
ionization energy of Sr (Stroncij[um])
Toplota isparavanja
144 kJ/mol
toplota topljenja
9,2 kJ/mol
standard enthalpy of formation
164 kJ/mol
Elektron
electron shell2, 8, 18, 8, 2
Bohrov model atoma: Sr (Stroncij[um])
Valentni elektron2
Lewis structure: Sr (Stroncij[um])
electron configuration[Kr] 5s2
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2
Enhanced Bohrov model atoma of Sr (Stroncij[um])
Orbital Diagram of Sr (Stroncij[um])
oksidacijsko stanje1, 2
Elektronegativnost
0.95
Electrophilicity Index
0,730062406922635 eV/particle
fundamental state of matter
agregatno stanjeSolid
gaseous state of matter
Boiling Point
1.650,15 K
Melting Point
1.050,15 K
critical pressure
Kritična temperatura
Trojna tačka
appearance
boja
Silver
appearance
Indeks prelamanja
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
Specifična električna provodljivost
7,7 MS/m
electrical resistivity
0,00000013 m Ω
Superprovodljivost
Magnetizam
typeparamagnetic
magnetic susceptibility (Mass)
0,00000000132 m³/Kg
magnetic susceptibility (Molar)
0,000000000116 m³/mol
magnetic susceptibility (Volume)
0,00000347
magnetic ordering
Kirijeva tačka
Néel temperature
struktura
Crystal StructureFace Centered Cubic (FCC)
lattice constant
6,08 Å
Lattice Anglesπ/2, π/2, π/2
mechanical property
Tvrdoća
1,5 MPa
bulk modulus
shear modulus
6,1 GPa
Young's modulus
Poisson's ratio
0,28
Brzina zvuka
klasifikacija
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
Kvantni brojevi1S0
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

Maseni broj73
broj neutrona35
relative atomic mass
72,9657 ± 0,00043 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
25,3 ± 1,4 ms
spin5/2
nuclear quadrupole moment
datum otkrića1993
parity-

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

74Sr

Maseni broj74
broj neutrona36
relative atomic mass
73,95617 ± 0,000107 Da
g-factor
0
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
27,6 ± 2,6 ms
spin0
nuclear quadrupole moment
0
datum otkrića1995
parity+

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

75Sr

Maseni broj75
broj neutrona37
relative atomic mass
74,949952767 ± 0,000236183 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
85,2 ± 2,3 ms
spin3/2
nuclear quadrupole moment
datum otkrića1991
parity-

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

76Sr

Maseni broj76
broj neutrona38
relative atomic mass
75,94176276 ± 0,000037 Da
g-factor
0
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
7,89 ± 0,07 s
spin0
nuclear quadrupole moment
0
datum otkrića1990
parity+

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

77Sr

Maseni broj77
broj neutrona39
relative atomic mass
76,937945454 ± 0,0000085 Da
g-factor
-0,1392 ± 0,0016
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
9 ± 0,2 s
spin5/2
nuclear quadrupole moment
1,27 ± 0,05
datum otkrića1976
parity+

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

78Sr

Maseni broj78
broj neutrona40
relative atomic mass
77,932179979 ± 0,000008 Da
g-factor
0
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
156,1 ± 2,7 s
spin0
nuclear quadrupole moment
0
datum otkrića1982
parity+

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

79Sr

Maseni broj79
broj neutrona41
relative atomic mass
78,929704692 ± 0,000007967 Da
g-factor
-0,316 ± 0,0026666666666667
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
2,25 ± 0,1 m
spin3/2
nuclear quadrupole moment
0,661 ± 0,006
datum otkrića1972
parity-

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

80Sr

Maseni broj80
broj neutrona42
relative atomic mass
79,924517538 ± 0,000003718 Da
g-factor
0
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
106,3 ± 1,5 m
spin0
nuclear quadrupole moment
0
datum otkrića1961
parity+

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

81Sr

Maseni broj81
broj neutrona43
relative atomic mass
80,923211393 ± 0,000003358 Da
g-factor
1,086 ± 0,008
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
22,3 ± 0,4 m
spin1/2
nuclear quadrupole moment
0
datum otkrića1952
parity-

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

82Sr

Maseni broj82
broj neutrona44
relative atomic mass
81,918399845 ± 0,000006432 Da
g-factor
0
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
25,35 ± 0,03 d
spin0
nuclear quadrupole moment
0
datum otkrića1952
parity+

decay modeintensity
ϵ (electron capture)100%

83Sr

Maseni broj83
broj neutrona45
relative atomic mass
82,917554372 ± 0,000007336 Da
g-factor
-0,237 ± 0,0002
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
32,41 ± 0,03 h
spin7/2
nuclear quadrupole moment
0,708 ± 0,011
datum otkrića1952
parity+

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

84Sr

Maseni broj84
broj neutrona46
relative atomic mass
83,913419118 ± 0,000001334 Da
g-factor
0
natural abundance
0,56 ± 0,02
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
spin0
nuclear quadrupole moment
0
datum otkrića1936
parity+

decay modeintensity
+ (double β+ decay)

85Sr

Maseni broj85
broj neutrona47
relative atomic mass
84,912932041 ± 0,00000302 Da
g-factor
-0,22224444444444 ± 0,00015555555555556
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
64,846 ± 0,006 d
spin9/2
nuclear quadrupole moment
0,263 ± 0,014
datum otkrića1940
parity+

decay modeintensity
ϵ (electron capture)100%

86Sr

Maseni broj86
broj neutrona48
relative atomic mass
85,90926072473 ± 0,00000000563 Da
g-factor
0
natural abundance
9,86 ± 0,2
Radioaktivnoststable isotope
Vrijeme poluraspadaNot Radioactive ☢️
spin0
nuclear quadrupole moment
0
datum otkrića1931
parity+

87Sr

Maseni broj87
broj neutrona49
relative atomic mass
86,90887749454 ± 0,0000000055 Da
g-factor
-0,24292444444444 ± 0,000024444444444444
natural abundance
7 ± 0,2
Radioaktivnoststable isotope
Vrijeme poluraspadaNot Radioactive ☢️
spin9/2
nuclear quadrupole moment
0,305 ± 0,002
datum otkrića1931
parity+

88Sr

Maseni broj88
broj neutrona50
relative atomic mass
87,905612253 ± 0,000000006 Da
g-factor
0
natural abundance
82,58 ± 0,35
Radioaktivnoststable isotope
Vrijeme poluraspadaNot Radioactive ☢️
spin0
nuclear quadrupole moment
0
datum otkrića1923
parity+

89Sr

Maseni broj89
broj neutrona51
relative atomic mass
88,907450808 ± 0,000000098 Da
g-factor
-0,4592 ± 0,0008
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
50,563 ± 0,025 d
spin5/2
nuclear quadrupole moment
-0,253 ± 0,008
datum otkrića1937
parity+

decay modeintensity
β (β decay)100%

90Sr

Maseni broj90
broj neutrona52
relative atomic mass
89,90772787 ± 0,000001555 Da
g-factor
0
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
28,91 ± 0,03 y
spin0
nuclear quadrupole moment
0
datum otkrića1948
parity+

decay modeintensity
β (β decay)100%

91Sr

Maseni broj91
broj neutrona53
relative atomic mass
90,910195942 ± 0,000005853 Da
g-factor
-0,354 ± 0,0008
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
9,65 ± 0,06 h
spin5/2
nuclear quadrupole moment
0,042 ± 0,01
datum otkrića1943
parity+

decay modeintensity
β (β decay)100%

92Sr

Maseni broj92
broj neutrona54
relative atomic mass
91,911038222 ± 0,000003675 Da
g-factor
0
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
2,611 ± 0,017 h
spin0
nuclear quadrupole moment
0
datum otkrića1956
parity+

decay modeintensity
β (β decay)100%

93Sr

Maseni broj93
broj neutrona55
relative atomic mass
92,914024314 ± 0,000008109 Da
g-factor
-0,3172 ± 0,0008
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
7,43 ± 0,03 m
spin5/2
nuclear quadrupole moment
0,24 ± 0,01
datum otkrića1959
parity+

decay modeintensity
β (β decay)100%

94Sr

Maseni broj94
broj neutrona56
relative atomic mass
93,915355641 ± 0,000001785 Da
g-factor
0
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
75,3 ± 0,2 s
spin0
nuclear quadrupole moment
0
datum otkrića1959
parity+

decay modeintensity
β (β decay)100%

95Sr

Maseni broj95
broj neutrona57
relative atomic mass
94,919358282 ± 0,000006237 Da
g-factor
-1,074 ± 0,004
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
23,9 ± 0,14 s
spin1/2
nuclear quadrupole moment
0
datum otkrića1961
parity+

decay modeintensity
β (β decay)100%

96Sr

Maseni broj96
broj neutrona58
relative atomic mass
95,921719045 ± 0,000009089 Da
g-factor
0
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
1,059 ± 0,008 s
spin0
nuclear quadrupole moment
0
datum otkrića1971
parity+

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

97Sr

Maseni broj97
broj neutrona59
relative atomic mass
96,926375621 ± 0,000003633 Da
g-factor
-0,996 ± 0,004
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
432 ± 4 ms
spin1/2
nuclear quadrupole moment
0
datum otkrića1978
parity+

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

98Sr

Maseni broj98
broj neutrona60
relative atomic mass
97,928692636 ± 0,000003463 Da
g-factor
0
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
653 ± 2 ms
spin0
nuclear quadrupole moment
0
datum otkrića1971
parity+

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

99Sr

Maseni broj99
broj neutrona61
relative atomic mass
98,932883604 ± 0,000005085 Da
g-factor
-0,174 ± 0,0033333333333333
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
269,2 ± 1 ms
spin3/2
nuclear quadrupole moment
0,76 ± 0,04
datum otkrića1975
parity+

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

100Sr

Maseni broj100
broj neutrona62
relative atomic mass
99,93578327 ± 0,000007426 Da
g-factor
0
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
202,1 ± 1,7 ms
spin0
nuclear quadrupole moment
0
datum otkrića1978
parity+

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

101Sr

Maseni broj101
broj neutrona63
relative atomic mass
100,940606264 ± 0,000009103 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
113,7 ± 1,7 ms
spin5/2
nuclear quadrupole moment
datum otkrića1983
parity-

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

102Sr

Maseni broj102
broj neutrona64
relative atomic mass
101,944004679 ± 0,000072 Da
g-factor
0
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
69 ± 6 ms
spin0
nuclear quadrupole moment
0
datum otkrića1986
parity+

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

103Sr

Maseni broj103
broj neutrona65
relative atomic mass
102,949243 ± 0,000215 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
53 ± 10 ms
spin5/2
nuclear quadrupole moment
datum otkrića1997
parity+

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

104Sr

Maseni broj104
broj neutrona66
relative atomic mass
103,953022 ± 0,000322 Da
g-factor
0
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
50,6 ± 4,2 ms
spin0
nuclear quadrupole moment
0
datum otkrića1997
parity+

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

105Sr

Maseni broj105
broj neutrona67
relative atomic mass
104,959001 ± 0,000537 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
39 ± 5 ms
spin5/2
nuclear quadrupole moment
datum otkrića1997
parity+

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

106Sr

Maseni broj106
broj neutrona68
relative atomic mass
105,963177 ± 0,000644 Da
g-factor
0
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
21 ± 8 ms
spin0
nuclear quadrupole moment
0
datum otkrića2010
parity+

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

107Sr

Maseni broj107
broj neutrona69
relative atomic mass
106,969672 ± 0,000751 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
spin1/2
nuclear quadrupole moment
0
datum otkrića2010
parity+

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

historija

otkrivač ili izumiteljA. Crawford
mjesto otkrićaScotland
datum otkrića1790
EtimologijaFrom the Scottish town, Strontian.
pronunciationSTRON-she-em (engleski)

izvor

Abundance
Abundance in Earth's crust
370 mg/kg
natural abundance (okean)
7,9 mg/L
natural abundance (ljudsko tijelo)
0,00046 %
natural abundance (Meteoroidi)
0,00087 %
natural abundance (Sunce)
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