Selenium

Selenium (Se)

chemical element with symbol Se and atomic number 34
Atomic Number34
Atomic Weight78.971
Nombor jisim80
Group16
Period4
Blockp
proton34 p+
neutron46 n0
Elektron34 e-
Animated Model Bohr of Se (Selenium)

Sifat Fizikal

Jejari Atom
115 pm
molar volume
Jejari kovalen
116 pm
Metallic Radius
117 pm
ionic radius
198 pm
Crystal Radius
184 pm
Jejari van der Waals
190 pm
ketumpatan
4.809 g/cm³
Atomic Radii Of The Elements: Selenium0102030405060708090100110120130140150160170180190pmJejari AtomJejari KovalenMetallic RadiusJejari van der Waals

Sifat Kimia

tenaga
proton affinity
Pertalian elektron
2.02067 eV/particle
ionization energy
9.752392 eV/particle
ionization energy of Se (Selenium)
Entalpi pengewapan
59.7 kJ/mol
entalpi pelakuran
5.23 kJ/mol
standard enthalpy of formation
227.2 kJ/mol
Elektron
Petala elektron2, 8, 18, 6
Model Bohr: Se (Selenium)
Elektron valens6
Teori ion Lewis: Se (Selenium)
tatarajah elektron[Ar] 3d10 4s2 4p4
1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p4
Enhanced Model Bohr of Se (Selenium)
Orbital Diagram of Se (Selenium)
Keadaan pengoksidaan-2, -1, 0, 1, 2, 3, 4, 5, 6
Keelektronegatifan
2.55
Electrophilicity Index
2.2408492709619536 eV/particle
keadaan jirim asas
fasa jirimSolid
gaseous state of matter
Boiling Point
958.15 K
Melting Point
453.15 K
critical pressure
critical temperature
1,766.15 K
triple point
rupa
warna
Gray
rupablack, red, and gray (not pictured) allotropes
indeks biasan
1.000895
sifat bahan
Thermal Conductivity
0.52 W/(m K)
Pengembangan terma
molar heat capacity
25.363 J/(mol K)
Specific Heat Capacity
0.321 J/(g⋅K)
heat capacity ratio
electrical properties
type
Kekonduksian elektrik
Kerintangan dan kekonduksian elektrik
Kesuperkonduksian
kemagnetan
typediamagnetic
magnetic susceptibility (Mass)
-0.000000004 m³/Kg
magnetic susceptibility (Molar)
-0.000000000316 m³/mol
magnetic susceptibility (Volume)
-0.0000193
magnetic ordering
Suhu Curie
Néel temperature
struktur
Crystal StructureSimple Monoclinic (HEX)
lattice constant
4.36 Å
Lattice Anglesπ/2, 1.58493, π/2
mechanical property
hardness
2 MPa
Modulus pukal
8.3 GPa
shear modulus
3.7 GPa
Young's modulus
10 GPa
Nisbah Poisson
0.33
Kelajuan bunyi
3,350 m/s
pengelasan
CategoryOther nonmetals, Nonmetals
CAS GroupVIB
IUPAC GroupVIA
Glawe Number95
Mendeleev Number101
Pettifor Number93
Geochemical Classsemi-volatile
Goldschmidt classificationchalcophile

other

Gas Basicity
polarizability
28.9 ± 1 a₀
C6 Dispersion Coefficient
210 a₀
allotropeAmorphous Red Selenium, Amorphous Black Selenium, Monoclinic Selenium, Hexagonal Selenium
Neutron cross section
11.7
Neutron Mass Absorption
0.0056
Nombor kuantum3P2
space group14 (P121/c1)

Isotopes of Selenium

Stable Isotopes3
Unstable Isotopes30
Natural Isotopes6
Isotopic Composition8049.80%8049.80%7823.69%7823.69%769.23%769.23%828.82%828.82%777.60%777.60%740.86%740.86%

63Se

Nombor jisim63
nombor neutron29
jisim atom relatif
62.981911 ± 0.000537 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
13.2 ± 3.9 ms
Spin3/2
nuclear quadrupole moment
tarikh penemuan2016
parity-

decay modeKeamatan (fizik)
β+ (β+ decay; β+ = ϵ + e+)100%
β+ p (β+-delayed proton emission)89%
2p (2-proton emission)0.5%

64Se

Nombor jisim64
nombor neutron30
jisim atom relatif
63.971165 ± 0.000537 Da
g-factor
0
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
22.6 ± 0.2 ms
Spin0
nuclear quadrupole moment
0
tarikh penemuan2005
parity+

decay modeKeamatan (fizik)
β+ (β+ decay; β+ = ϵ + e+)
β+ p (β+-delayed proton emission)

65Se

Nombor jisim65
nombor neutron31
jisim atom relatif
64.964552 ± 0.000322 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
34.2 ± 0.7 ms
Spin3/2
nuclear quadrupole moment
tarikh penemuan1993
parity-

decay modeKeamatan (fizik)
β+ (β+ decay; β+ = ϵ + e+)100%
β+ p (β+-delayed proton emission)87%

66Se

Nombor jisim66
nombor neutron32
jisim atom relatif
65.955276 ± 0.000215 Da
g-factor
0
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
54 ± 4 ms
Spin0
nuclear quadrupole moment
0
tarikh penemuan1993
parity+

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

67Se

Nombor jisim67
nombor neutron33
jisim atom relatif
66.949994 ± 0.000072 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
133 ± 4 ms
Spin5/2
nuclear quadrupole moment
tarikh penemuan1991
parity-

decay modeKeamatan (fizik)
β+ (β+ decay; β+ = ϵ + e+)100%
β+ p (β+-delayed proton emission)0.5%

68Se

Nombor jisim68
nombor neutron34
jisim atom relatif
67.941825236 ± 0.000000532 Da
g-factor
0
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
35.5 ± 0.7 s
Spin0
nuclear quadrupole moment
0
tarikh penemuan1990
parity+

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

69Se

Nombor jisim69
nombor neutron35
jisim atom relatif
68.939414845 ± 0.000001599 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
27.4 ± 0.2 s
Spin1/2
nuclear quadrupole moment
0
tarikh penemuan1974
parity-

decay modeKeamatan (fizik)
β+ (β+ decay; β+ = ϵ + e+)100%
β+ p (β+-delayed proton emission)0.052%

70Se

Nombor jisim70
nombor neutron36
jisim atom relatif
69.933515521 ± 0.0000017 Da
g-factor
0
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
41.1 ± 0.3 m
Spin0
nuclear quadrupole moment
0
tarikh penemuan1950
parity+

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

71Se

Nombor jisim71
nombor neutron37
jisim atom relatif
70.932209431 ± 0.000003 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
4.74 ± 0.05 m
Spin5/2
nuclear quadrupole moment
tarikh penemuan1957
parity-

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

72Se

Nombor jisim72
nombor neutron38
jisim atom relatif
71.927140506 ± 0.0000021 Da
g-factor
0
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
8.4 ± 0.08 d
Spin0
nuclear quadrupole moment
0
tarikh penemuan1948
parity+

decay modeKeamatan (fizik)
ϵ (electron capture)100%

73Se

Nombor jisim73
nombor neutron39
jisim atom relatif
72.926754881 ± 0.000007969 Da
g-factor
0.19822222222222 ± 0.0028888888888889
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
7.15 ± 0.09 h
Spin9/2
nuclear quadrupole moment
tarikh penemuan1948
parity+

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

74Se

Nombor jisim74
nombor neutron40
jisim atom relatif
73.922475933 ± 0.000000015 Da
g-factor
0
natural abundance
0.86 ± 0.03
Reputan radioaktif☢️ radioactive element
setengah hayat
Spin0
nuclear quadrupole moment
0
tarikh penemuan1922
parity+

decay modeKeamatan (fizik)
+ (double β+ decay)

75Se

Nombor jisim75
nombor neutron41
jisim atom relatif
74.92252287 ± 0.000000078 Da
g-factor
0.2732 ± 0.004
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
119.78 ± 0.03 d
Spin5/2
nuclear quadrupole moment
1.1 ± 0.2
tarikh penemuan1947
parity+

decay modeKeamatan (fizik)
ϵ (electron capture)100%

76Se

Nombor jisim76
nombor neutron42
jisim atom relatif
75.919213702 ± 0.000000017 Da
g-factor
0
natural abundance
9.23 ± 0.07
Reputan radioaktifIsotop stabil
setengah hayatNot Radioactive ☢️
Spin0
nuclear quadrupole moment
0
tarikh penemuan1922
parity+

77Se

Nombor jisim77
nombor neutron43
jisim atom relatif
76.91991415 ± 0.000000067 Da
g-factor
1.06712 ± 0.0001
natural abundance
7.6 ± 0.07
Reputan radioaktifIsotop stabil
setengah hayatNot Radioactive ☢️
Spin1/2
nuclear quadrupole moment
0
tarikh penemuan1922
parity-

78Se

Nombor jisim78
nombor neutron44
jisim atom relatif
77.917309244 ± 0.000000191 Da
g-factor
0
natural abundance
23.69 ± 0.22
Reputan radioaktifIsotop stabil
setengah hayatNot Radioactive ☢️
Spin0
nuclear quadrupole moment
0
tarikh penemuan1922
parity+

79Se

Nombor jisim79
nombor neutron45
jisim atom relatif
78.918499252 ± 0.000000238 Da
g-factor
-0.29085714285714 ± 0.0042857142857143
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
327 ± 28 ky
Spin7/2
nuclear quadrupole moment
0.8 ± 0.2
tarikh penemuan1950
parity+

decay modeKeamatan (fizik)
β (β decay)100%

80Se

Nombor jisim80
nombor neutron46
jisim atom relatif
79.916521761 ± 0.000001016 Da
g-factor
0
natural abundance
49.8 ± 0.36
Reputan radioaktif☢️ radioactive element
setengah hayat
Spin0
nuclear quadrupole moment
0
tarikh penemuan1922
parity+

decay modeKeamatan (fizik)
(double β decay)

81Se

Nombor jisim81
nombor neutron47
jisim atom relatif
80.917993019 ± 0.000001049 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
18.45 ± 0.12 m
Spin1/2
nuclear quadrupole moment
0
tarikh penemuan1948
parity-

decay modeKeamatan (fizik)
β (β decay)100%

82Se

Nombor jisim82
nombor neutron48
jisim atom relatif
81.916699531 ± 0.0000005 Da
g-factor
0
natural abundance
8.82 ± 0.15
Reputan radioaktif☢️ radioactive element
setengah hayat
87.6 ± 1.5 Ey
Spin0
nuclear quadrupole moment
0
tarikh penemuan1922
parity+

decay modeKeamatan (fizik)
(double β decay)100%

83Se

Nombor jisim83
nombor neutron49
jisim atom relatif
82.919118604 ± 0.000003259 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
22.25 ± 0.04 m
Spin9/2
nuclear quadrupole moment
tarikh penemuan1937
parity+

decay modeKeamatan (fizik)
β (β decay)100%

84Se

Nombor jisim84
nombor neutron50
jisim atom relatif
83.918466761 ± 0.000002105 Da
g-factor
0
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
3.26 ± 0.1 m
Spin0
nuclear quadrupole moment
0
tarikh penemuan1960
parity+

decay modeKeamatan (fizik)
β (β decay)100%

85Se

Nombor jisim85
nombor neutron51
jisim atom relatif
84.922260758 ± 0.000002804 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
32.9 ± 0.3 s
Spin5/2
nuclear quadrupole moment
tarikh penemuan1960
parity

decay modeKeamatan (fizik)
β (β decay)100%

86Se

Nombor jisim86
nombor neutron52
jisim atom relatif
85.924311732 ± 0.000002705 Da
g-factor
0
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
14.3 ± 0.3 s
Spin0
nuclear quadrupole moment
0
tarikh penemuan1973
parity+

decay modeKeamatan (fizik)
β (β decay)100%
β n (β-delayed neutron emission)

87Se

Nombor jisim87
nombor neutron53
jisim atom relatif
86.928688616 ± 0.000002405 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
5.5 ± 0.06 s
Spin3/2
nuclear quadrupole moment
tarikh penemuan1968
parity+

decay modeKeamatan (fizik)
β (β decay)100%
β n (β-delayed neutron emission)0.6%

88Se

Nombor jisim88
nombor neutron54
jisim atom relatif
87.93141749 ± 0.000003604 Da
g-factor
0
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
1.53 ± 0.06 s
Spin0
nuclear quadrupole moment
0
tarikh penemuan1970
parity+

decay modeKeamatan (fizik)
β (β decay)100%
β n (β-delayed neutron emission)0.99%

89Se

Nombor jisim89
nombor neutron55
jisim atom relatif
88.936669058 ± 0.000004003 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
430 ± 50 ms
Spin5/2
nuclear quadrupole moment
tarikh penemuan1971
parity+

decay modeKeamatan (fizik)
β (β decay)100%
β n (β-delayed neutron emission)7.8%

90Se

Nombor jisim90
nombor neutron56
jisim atom relatif
89.940096 ± 0.000354 Da
g-factor
0
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
210 ± 80 ms
Spin0
nuclear quadrupole moment
0
tarikh penemuan1994
parity+

decay modeKeamatan (fizik)
β (β decay)100%
β n (β-delayed neutron emission)

91Se

Nombor jisim91
nombor neutron57
jisim atom relatif
90.9457 ± 0.000465 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
270 ± 50 ms
Spin1/2
nuclear quadrupole moment
0
tarikh penemuan1975
parity+

decay modeKeamatan (fizik)
β (β decay)100%
β n (β-delayed neutron emission)21%
2n (2-neutron emission)

92Se

Nombor jisim92
nombor neutron58
jisim atom relatif
91.94984 ± 0.000429 Da
g-factor
0
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
Spin0
nuclear quadrupole moment
0
tarikh penemuan1997
parity+

decay modeKeamatan (fizik)
β (β decay)
β n (β-delayed neutron emission)
2n (2-neutron emission)

93Se

Nombor jisim93
nombor neutron59
jisim atom relatif
92.956135 ± 0.000429 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
Spin1/2
nuclear quadrupole moment
0
tarikh penemuan1997
parity+

decay modeKeamatan (fizik)
β (β decay)
β n (β-delayed neutron emission)
2n (2-neutron emission)

94Se

Nombor jisim94
nombor neutron60
jisim atom relatif
93.96049 ± 0.000537 Da
g-factor
0
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
Spin0
nuclear quadrupole moment
0
tarikh penemuan1997
parity+

decay modeKeamatan (fizik)
β (β decay)
β n (β-delayed neutron emission)
2n (2-neutron emission)

95Se

Nombor jisim95
nombor neutron61
jisim atom relatif
94.9673 ± 0.000537 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
Spin3/2
nuclear quadrupole moment
tarikh penemuan2010
parity+

decay modeKeamatan (fizik)
β (β decay)
β n (β-delayed neutron emission)
2n (2-neutron emission)
Selen 1

sejarah

penemu atau perekaJöns Berzelius
tempat penemuanSweden
tarikh penemuan1818
EtimologiGreek: selênê (moon).
sebutansi-LEE-ni-em (Inggeris)

sumber

Abundance
Abundance in Earth's crust
0.05 mg/kg
natural abundance (lautan)
0.0002 mg/L
natural abundance (Tubuh manusia)
0.000005 %
natural abundance (Meteoroid)
0.0013 %
natural abundance (Matahari)
Abundance in Universe
0.000003 %

Nuclear Screening Constants

1s0.7378
2p3.9348
2s9.1116
3d15.523
3p15.295
3s14.5966
4p25.7128
4s24.2424