Strontium (Sr)

chemical element with symbol Sr and atomic number 38

Atomic Number	38
Atomic Weight	87.62
Nombor jisim	88

Group	2
Period	5
Block	s

proton	38 p⁺
neutron	50 n⁰
Elektron	38 e^-

Sifat Fizikal

Jejari Atom	200 pm 279 pm
molar volume	33.7 cm³/mol
Jejari kovalen	185 pm 157 pm 139 pm 195 pm 195 pm
Metallic Radius	191 pm 215 pm
ionic radius	118 pm 121 pm 126 pm 131 pm 136 pm 144 pm
Crystal Radius	132 pm 135 pm 140 pm 145 pm 150 pm 158 pm
Jejari van der Waals	255 pm 249 pm 300 pm 249 pm 364.1 pm
ketumpatan	2.64 g/cm³ 2,375 kg/m³

Sifat Kimia

{ERROR}

tenaga

proton affinity
Pertalian elektron	0.048 eV/particle
ionization energy	5.6948672 eV/particle 11.030276 eV/particle 42.88353 eV/particle 56.28 eV/particle 71 eV/particle 88 eV/particle 104 eV/particle 121.21 eV/particle 158.3 eV/particle 177 eV/particle 324.07 eV/particle 362 eV/particle 408 eV/particle 454 eV/particle 499 eV/particle 562 eV/particle 612 eV/particle 665 eV/particle 722 eV/particle 774 eV/particle 932 eV/particle 982.1 eV/particle 1,038 eV/particle 1,105 eV/particle 1,165 eV/particle 1,211 eV/particle 1,333.4 eV/particle 1,387.19 eV/particle 3,344.7 eV/particle 3,497 eV/particle 3,664 eV/particle 3,830 eV/particle 4,053 eV/particle 4,232 eV/particle 4,465 eV/particle 4,612.397 eV/particle 19,345.587 eV/particle 20,025.23 eV/particle

Entalpi pengewapan	144 kJ/mol
entalpi pelakuran	9.2 kJ/mol
standard enthalpy of formation	164 kJ/mol
Elektron

Petala elektron	2, 8, 18, 8, 2

Elektron valens	2 ⓘ

tatarajah elektron	[Kr] 5s²ⓘ 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s²

Keadaan pengoksidaan	1, 2
Keelektronegatifan	5.695 eV/particle 0.1185082 0.95
Electrophilicity Index	0.730062406922635 eV/particle
keadaan jirim asas

fasa jirim
gaseous state of matter
Boiling Point	1,650.15 K
Melting Point	1,050.15 K
critical pressure
critical temperature
triple point
rupa
warna	Black #ff1493 #00ff00 #00ff00
rupa
indeks biasan
sifat bahan
Thermal Conductivity
Pengembangan terma	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
type	Conductor
Kekonduksian elektrik	7.7 MS/m
Kerintangan dan kekonduksian elektrik	0.00000013 Ω*m
Kesuperkonduksian
kemagnetan
type	paramagnetic
magnetic susceptibility (Mass)	0.00000000132 m³/Kg
magnetic susceptibility (Molar)	0.000000000116 m³/mol
magnetic susceptibility (Volume)	0.00000347
magnetic ordering
Suhu Curie
Néel temperature
struktur
Crystal Structure	{ERROR}
lattice constant	6.08 Å
Lattice Angles	π/2, π/2, π/2
mechanical property
hardness	1.5 MPa
Modulus pukal
shear modulus	6.1 GPa
Young's modulus
Nisbah Poisson	0.28
Kelajuan bunyi
pengelasan
Category	Actinides, Alkaline earth metals
CAS Group	IIA
IUPAC Group	IIA
Glawe Number	15
Mendeleev Number	8
Pettifor Number	15
Geochemical Class	alkaline earth metal
Goldschmidt classification	litophile

other

Gas Basicity
polarizability	197.2 ± 0.2 a₀
C6 Dispersion Coefficient	3,175 a₀ 3,230 a₀
allotrope
Neutron cross section	1.2
Neutron Mass Absorption	0.0005
Nombor kuantum	1S0
space group	225 (Fm_3m)

Isotopes of Strontium

Stable Isotopes	3
Unstable Isotopes	32
Natural Isotopes	4

⁷³Sr

Nombor jisim	73
nombor neutron	35
Jisim Atom Relatif	72.9657 ± 0.00043 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	25.3 ± 1.4 ms
Spin	5/2
nuclear quadrupole moment
tarikh penemuan	1993
parity	-

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

⁷⁴Sr

Nombor jisim	74
nombor neutron	36
Jisim Atom Relatif	73.95617 ± 0.000107 Da
g-factor	0
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	27.6 ± 2.6 ms
Spin	0
nuclear quadrupole moment	0
tarikh penemuan	1995
parity	+

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

⁷⁵Sr

Nombor jisim	75
nombor neutron	37
Jisim Atom Relatif	74.949952767 ± 0.000236183 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	85.2 ± 2.3 ms
Spin	3/2
nuclear quadrupole moment
tarikh penemuan	1991
parity	-

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

⁷⁶Sr

Nombor jisim	76
nombor neutron	38
Jisim Atom Relatif	75.94176276 ± 0.000037 Da
g-factor	0
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	7.89 ± 0.07 s
Spin	0
nuclear quadrupole moment	0
tarikh penemuan	1990
parity	+

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

⁷⁷Sr

Nombor jisim	77
nombor neutron	39
Jisim Atom Relatif	76.937945454 ± 0.0000085 Da
g-factor	-0.1392 ± 0.0016
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	9 ± 0.2 s
Spin	5/2
nuclear quadrupole moment	1.27 ± 0.05
tarikh penemuan	1976
parity	+

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

⁷⁸Sr

Nombor jisim	78
nombor neutron	40
Jisim Atom Relatif	77.932179979 ± 0.000008 Da
g-factor	0
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	156.1 ± 2.7 s
Spin	0
nuclear quadrupole moment	0
tarikh penemuan	1982
parity	+

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

⁷⁹Sr

Nombor jisim	79
nombor neutron	41
Jisim Atom Relatif	78.929704692 ± 0.000007967 Da
g-factor	-0.316 ± 0.0026666666666667
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	2.25 ± 0.1 m
Spin	3/2
nuclear quadrupole moment	0.661 ± 0.006
tarikh penemuan	1972
parity	-

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

⁸⁰Sr

Nombor jisim	80
nombor neutron	42
Jisim Atom Relatif	79.924517538 ± 0.000003718 Da
g-factor	0
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	106.3 ± 1.5 m
Spin	0
nuclear quadrupole moment	0
tarikh penemuan	1961
parity	+

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

⁸¹Sr

Nombor jisim	81
nombor neutron	43
Jisim Atom Relatif	80.923211393 ± 0.000003358 Da
g-factor	1.086 ± 0.008
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	22.3 ± 0.4 m
Spin	1/2
nuclear quadrupole moment	0
tarikh penemuan	1952
parity	-

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

⁸²Sr

Nombor jisim	82
nombor neutron	44
Jisim Atom Relatif	81.918399845 ± 0.000006432 Da
g-factor	0
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	25.35 ± 0.03 d
Spin	0
nuclear quadrupole moment	0
tarikh penemuan	1952
parity	+

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

⁸³Sr

Nombor jisim	83
nombor neutron	45
Jisim Atom Relatif	82.917554372 ± 0.000007336 Da
g-factor	-0.237 ± 0.0002
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	32.41 ± 0.03 h
Spin	7/2
nuclear quadrupole moment	0.708 ± 0.011
tarikh penemuan	1952
parity	+

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

⁸⁴Sr

Nombor jisim	84
nombor neutron	46
Jisim Atom Relatif	83.913419118 ± 0.000001334 Da
g-factor	0
natural abundance	0.56 ± 0.02
Reputan radioaktif	☢️ radioactive element
setengah hayat
Spin	0
nuclear quadrupole moment	0
tarikh penemuan	1936
parity	+

decay mode	Keamatan (fizik)
2β⁺ (double β⁺ decay)

⁸⁵Sr

Nombor jisim	85
nombor neutron	47
Jisim Atom Relatif	84.912932041 ± 0.00000302 Da
g-factor	-0.22224444444444 ± 0.00015555555555556
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	64.846 ± 0.006 d
Spin	9/2
nuclear quadrupole moment	0.263 ± 0.014
tarikh penemuan	1940
parity	+

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

⁸⁶Sr

Nombor jisim	86
nombor neutron	48
Jisim Atom Relatif	85.90926072473 ± 0.00000000563 Da
g-factor	0
natural abundance	9.86 ± 0.2
Reputan radioaktif	Isotop stabil
setengah hayat	Not Radioactive ☢️
Spin	0
nuclear quadrupole moment	0
tarikh penemuan	1931
parity	+

⁸⁷Sr

Nombor jisim	87
nombor neutron	49
Jisim Atom Relatif	86.90887749454 ± 0.0000000055 Da
g-factor	-0.24292444444444 ± 0.000024444444444444
natural abundance	7 ± 0.2
Reputan radioaktif	Isotop stabil
setengah hayat	Not Radioactive ☢️
Spin	9/2
nuclear quadrupole moment	0.305 ± 0.002
tarikh penemuan	1931
parity	+

⁸⁸Sr

Nombor jisim	88
nombor neutron	50
Jisim Atom Relatif	87.905612253 ± 0.000000006 Da
g-factor	0
natural abundance	82.58 ± 0.35
Reputan radioaktif	Isotop stabil
setengah hayat	Not Radioactive ☢️
Spin	0
nuclear quadrupole moment	0
tarikh penemuan	1923
parity	+

⁸⁹Sr

Nombor jisim	89
nombor neutron	51
Jisim Atom Relatif	88.907450808 ± 0.000000098 Da
g-factor	-0.4592 ± 0.0008
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	50.563 ± 0.025 d
Spin	5/2
nuclear quadrupole moment	-0.253 ± 0.008
tarikh penemuan	1937
parity	+

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

⁹⁰Sr

Nombor jisim	90
nombor neutron	52
Jisim Atom Relatif	89.90772787 ± 0.000001555 Da
g-factor	0
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	28.91 ± 0.03 y
Spin	0
nuclear quadrupole moment	0
tarikh penemuan	1948
parity	+

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

⁹¹Sr

Nombor jisim	91
nombor neutron	53
Jisim Atom Relatif	90.910195942 ± 0.000005853 Da
g-factor	-0.354 ± 0.0008
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	9.65 ± 0.06 h
Spin	5/2
nuclear quadrupole moment	0.042 ± 0.01
tarikh penemuan	1943
parity	+

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

⁹²Sr

Nombor jisim	92
nombor neutron	54
Jisim Atom Relatif	91.911038222 ± 0.000003675 Da
g-factor	0
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	2.611 ± 0.017 h
Spin	0
nuclear quadrupole moment	0
tarikh penemuan	1956
parity	+

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

⁹³Sr

Nombor jisim	93
nombor neutron	55
Jisim Atom Relatif	92.914024314 ± 0.000008109 Da
g-factor	-0.3172 ± 0.0008
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	7.43 ± 0.03 m
Spin	5/2
nuclear quadrupole moment	0.24 ± 0.01
tarikh penemuan	1959
parity	+

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

⁹⁴Sr

Nombor jisim	94
nombor neutron	56
Jisim Atom Relatif	93.915355641 ± 0.000001785 Da
g-factor	0
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	75.3 ± 0.2 s
Spin	0
nuclear quadrupole moment	0
tarikh penemuan	1959
parity	+

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

⁹⁵Sr

Nombor jisim	95
nombor neutron	57
Jisim Atom Relatif	94.919358282 ± 0.000006237 Da
g-factor	-1.074 ± 0.004
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	23.9 ± 0.14 s
Spin	1/2
nuclear quadrupole moment	0
tarikh penemuan	1961
parity	+

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

⁹⁶Sr

Nombor jisim	96
nombor neutron	58
Jisim Atom Relatif	95.921719045 ± 0.000009089 Da
g-factor	0
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	1.059 ± 0.008 s
Spin	0
nuclear quadrupole moment	0
tarikh penemuan	1971
parity	+

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

⁹⁷Sr

Nombor jisim	97
nombor neutron	59
Jisim Atom Relatif	96.926375621 ± 0.000003633 Da
g-factor	-0.996 ± 0.004
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	432 ± 4 ms
Spin	1/2
nuclear quadrupole moment	0
tarikh penemuan	1978
parity	+

decay mode	Keamatan (fizik)
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	0.02%

⁹⁸Sr

Nombor jisim	98
nombor neutron	60
Jisim Atom Relatif	97.928692636 ± 0.000003463 Da
g-factor	0
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	653 ± 2 ms
Spin	0
nuclear quadrupole moment	0
tarikh penemuan	1971
parity	+

decay mode	Keamatan (fizik)
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	0.23%

⁹⁹Sr

Nombor jisim	99
nombor neutron	61
Jisim Atom Relatif	98.932883604 ± 0.000005085 Da
g-factor	-0.174 ± 0.0033333333333333
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	269.2 ± 1 ms
Spin	3/2
nuclear quadrupole moment	0.76 ± 0.04
tarikh penemuan	1975
parity	+

decay mode	Keamatan (fizik)
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	0.1%

¹⁰⁰Sr

Nombor jisim	100
nombor neutron	62
Jisim Atom Relatif	99.93578327 ± 0.000007426 Da
g-factor	0
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	202.1 ± 1.7 ms
Spin	0
nuclear quadrupole moment	0
tarikh penemuan	1978
parity	+

decay mode	Keamatan (fizik)
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	1.11%

¹⁰¹Sr

Nombor jisim	101
nombor neutron	63
Jisim Atom Relatif	100.940606264 ± 0.000009103 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	113.7 ± 1.7 ms
Spin	5/2
nuclear quadrupole moment
tarikh penemuan	1983
parity	-

decay mode	Keamatan (fizik)
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	2.75%

¹⁰²Sr

Nombor jisim	102
nombor neutron	64
Jisim Atom Relatif	101.944004679 ± 0.000072 Da
g-factor	0
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	69 ± 6 ms
Spin	0
nuclear quadrupole moment	0
tarikh penemuan	1986
parity	+

decay mode	Keamatan (fizik)
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	5.5%

¹⁰³Sr

Nombor jisim	103
nombor neutron	65
Jisim Atom Relatif	102.949243 ± 0.000215 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	53 ± 10 ms
Spin	5/2
nuclear quadrupole moment
tarikh penemuan	1997
parity	+

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

¹⁰⁴Sr

Nombor jisim	104
nombor neutron	66
Jisim Atom Relatif	103.953022 ± 0.000322 Da
g-factor	0
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	50.6 ± 4.2 ms
Spin	0
nuclear quadrupole moment	0
tarikh penemuan	1997
parity	+

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

¹⁰⁵Sr

Nombor jisim	105
nombor neutron	67
Jisim Atom Relatif	104.959001 ± 0.000537 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	39 ± 5 ms
Spin	5/2
nuclear quadrupole moment
tarikh penemuan	1997
parity	+

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

¹⁰⁶Sr

Nombor jisim	106
nombor neutron	68
Jisim Atom Relatif	105.963177 ± 0.000644 Da
g-factor	0
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	21 ± 8 ms
Spin	0
nuclear quadrupole moment	0
tarikh penemuan	2010
parity	+

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

¹⁰⁷Sr

Nombor jisim	107
nombor neutron	69
Jisim Atom Relatif	106.969672 ± 0.000751 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat
Spin	1/2
nuclear quadrupole moment	0
tarikh penemuan	2010
parity	+

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

sejarah

penemu atau pereka	A. Crawford
tempat penemuan	Scotland
tarikh penemuan	1790
Etimologi	From the Scottish town, Strontian.
sebutan	STRON-she-em (Inggeris)

sumber

Abundance
Abundance in Earth's crust	370 mg/kg
natural abundance (lautan)	7.9 mg/L
natural abundance (Tubuh manusia)	0.00046 %
natural abundance (Meteoroid)	0.00087 %
natural abundance (Matahari)	0.000005 %
Abundance in Universe	0.000004 %

Nuclear Screening Constants

1	s	0.8089
2	p	3.9696
2	s	10.0982
3	d	15.2738
3	p	15.8324
3	s	15.3362
4	p	26.068
4	s	24.5556
5	s	31.9295

Strontium on ChemicalAid

Strontium (Sr)

Sifat Fizikal

Sifat Kimia

other

Isotopes of Strontium

73Sr

74Sr

75Sr

76Sr

77Sr

78Sr

79Sr

80Sr

81Sr

82Sr

83Sr

84Sr

85Sr

86Sr

87Sr

88Sr

89Sr

90Sr

91Sr

92Sr

93Sr

94Sr

95Sr

96Sr

97Sr

98Sr

99Sr

100Sr

101Sr

102Sr

103Sr

104Sr

105Sr

106Sr

107Sr

sejarah

sumber

Nuclear Screening Constants

⁷³Sr

⁷⁴Sr

⁷⁵Sr

⁷⁶Sr

⁷⁷Sr

⁷⁸Sr

⁷⁹Sr

⁸⁰Sr

⁸¹Sr

⁸²Sr

⁸³Sr

⁸⁴Sr

⁸⁵Sr

⁸⁶Sr

⁸⁷Sr

⁸⁸Sr

⁸⁹Sr

⁹⁰Sr

⁹¹Sr

⁹²Sr

⁹³Sr

⁹⁴Sr

⁹⁵Sr

⁹⁶Sr

⁹⁷Sr

⁹⁸Sr

⁹⁹Sr

¹⁰⁰Sr

¹⁰¹Sr

¹⁰²Sr

¹⁰³Sr

¹⁰⁴Sr

¹⁰⁵Sr

¹⁰⁶Sr

¹⁰⁷Sr