Selenij

Selenij (Se)

chemical element with symbol Se and atomic number 34
Atomski broj34
Relativna atomska masa78.971
Maseni broj80
Skupina16
Perioda4
Blokp
proton34 p+
neutron46 n0
elektron34 e-
Animated Bohrov model atoma of Se (Selenij)

Physical Property

Atomski Radijus
115 pm
Molni volumen
Kovalentni Radijus
116 pm
Metallic Radius
117 pm
Ionski radijus
198 pm
Crystal Radius
184 pm
Van der Waals radius
190 pm
gustoća
4,809 g/cm³
Atomic Radii Of The Elements: Selenij0102030405060708090100110120130140150160170180190pmAtomski RadijusKovalentni RadijusMetallic RadiusVan der Waals radius

Kemijsko Svojstvo

energija
proton affinity
Elektronski afinitet
2,02067 eV/particle
ionization energy
9,752392 eV/particle
ionization energy of Se (Selenij)
Toplina isparivanja
59,7 kJ/mol
toplina taljenja
5,23 kJ/mol
standard enthalpy of formation
227,2 kJ/mol
elektron
Elektronska ljuska2, 8, 18, 6
Bohrov model atoma: Se (Selenij)
valence electron6
Lewis structure: Se (Selenij)
electron configuration[Ar] 3d10 4s2 4p4
1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p4
Enhanced Bohrov model atoma of Se (Selenij)
Orbital Diagram of Se (Selenij)
Oksidacijski broj-2, -1, 0, 1, 2, 3, 4, 5, 6
Elektronegativnost
2.55
Electrophilicity Index
2,2408492709619536 eV/particle
fundamental state of matter
agregatno stanjeČvrsto
gaseous state of matter
Vrelište
958,15 K
Talište
453,15 K
critical pressure
critical temperature
1.766,15 K
Trojna točka
appearance
boja
Siva
appearanceblack, red, and gray (not pictured) allotropes
Indeks prelamanja
1,000895
thermodynamic material property
Toplinska vodljivost
0,52 W/(m K)
Toplinsko istezanje
molar heat capacity
25,363 J/(mol K)
Specifični toplinski kapacitet
0,321 J/(g⋅K)
heat capacity ratio
electrical properties
type
electrical conductivity
Električna otpornost i provodnost
Supravodljivost
Magnetizam
typediamagnetic
Magnetna susceptibilnost (Mass)
−0,000000004 m³/Kg
Magnetna susceptibilnost (Molar)
−0,000000000316 m³/mol
Magnetna susceptibilnost (Volume)
−0,0000193
magnetic ordering
Curieva temperatura
Néel temperature
struktura
Kristalna strukturaJednostavna monoklinska (HEX)
lattice constant
4,36 Å
Lattice Anglesπ/2, 1.58493, π/2
mechanical property
Tvrdoća
2 MPa
bulk modulus
8,3 GPa
shear modulus
3,7 GPa
Youngov modul elastičnosti
10 GPa
Poissonov omjer
0,33
brzina zvuka
3.350 m/s
classification
KategorijaOstali nemetali, 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
Nuklearni udarni presjek
11,7
Neutron Mass Absorption
0,0056
Kvantni brojevi3P2
space group14 (P121/c1)

Isotopes of Selenium

Stabilni izotopi3
Nestabilni izotopi30
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

Maseni broj63
neutron number29
Relativna atomska masa
62,981911 ± 0,000537 Da
g-factor
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
13,2 ± 3,9 ms
spin3/2
nuclear quadrupole moment
vrijeme otkrića ili izuma2016
Parnost-

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

64Se

Maseni broj64
neutron number30
Relativna atomska masa
63,971165 ± 0,000537 Da
g-factor
0
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
22,6 ± 0,2 ms
spin0
nuclear quadrupole moment
0
vrijeme otkrića ili izuma2005
Parnost+

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

65Se

Maseni broj65
neutron number31
Relativna atomska masa
64,964552 ± 0,000322 Da
g-factor
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
34,2 ± 0,7 ms
spin3/2
nuclear quadrupole moment
vrijeme otkrića ili izuma1993
Parnost-

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

66Se

Maseni broj66
neutron number32
Relativna atomska masa
65,955276 ± 0,000215 Da
g-factor
0
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
54 ± 4 ms
spin0
nuclear quadrupole moment
0
vrijeme otkrića ili izuma1993
Parnost+

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

67Se

Maseni broj67
neutron number33
Relativna atomska masa
66,949994 ± 0,000072 Da
g-factor
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
133 ± 4 ms
spin5/2
nuclear quadrupole moment
vrijeme otkrića ili izuma1991
Parnost-

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

68Se

Maseni broj68
neutron number34
Relativna atomska masa
67,941825236 ± 0,000000532 Da
g-factor
0
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
35,5 ± 0,7 s
spin0
nuclear quadrupole moment
0
vrijeme otkrića ili izuma1990
Parnost+

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

69Se

Maseni broj69
neutron number35
Relativna atomska masa
68,939414845 ± 0,000001599 Da
g-factor
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
27,4 ± 0,2 s
spin1/2
nuclear quadrupole moment
0
vrijeme otkrića ili izuma1974
Parnost-

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

70Se

Maseni broj70
neutron number36
Relativna atomska masa
69,933515521 ± 0,0000017 Da
g-factor
0
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
41,1 ± 0,3 m
spin0
nuclear quadrupole moment
0
vrijeme otkrića ili izuma1950
Parnost+

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

71Se

Maseni broj71
neutron number37
Relativna atomska masa
70,932209431 ± 0,000003 Da
g-factor
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
4,74 ± 0,05 m
spin5/2
nuclear quadrupole moment
vrijeme otkrića ili izuma1957
Parnost-

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

72Se

Maseni broj72
neutron number38
Relativna atomska masa
71,927140506 ± 0,0000021 Da
g-factor
0
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
8,4 ± 0,08 d
spin0
nuclear quadrupole moment
0
vrijeme otkrića ili izuma1948
Parnost+

decay modeintensity
ϵ (electron capture)100%

73Se

Maseni broj73
neutron number39
Relativna atomska masa
72,926754881 ± 0,000007969 Da
g-factor
0,19822222222222 ± 0,0028888888888889
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
7,15 ± 0,09 h
spin9/2
nuclear quadrupole moment
vrijeme otkrića ili izuma1948
Parnost+

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

74Se

Maseni broj74
neutron number40
Relativna atomska masa
73,922475933 ± 0,000000015 Da
g-factor
0
natural abundance
0,86 ± 0,03
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
spin0
nuclear quadrupole moment
0
vrijeme otkrića ili izuma1922
Parnost+

decay modeintensity
+ (double β+ decay)

75Se

Maseni broj75
neutron number41
Relativna atomska masa
74,92252287 ± 0,000000078 Da
g-factor
0,2732 ± 0,004
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
119,78 ± 0,03 d
spin5/2
nuclear quadrupole moment
1,1 ± 0,2
vrijeme otkrića ili izuma1947
Parnost+

decay modeintensity
ϵ (electron capture)100%

76Se

Maseni broj76
neutron number42
Relativna atomska masa
75,919213702 ± 0,000000017 Da
g-factor
0
natural abundance
9,23 ± 0,07
radioaktivnoststable isotope
Vrijeme poluraspadaNot Radioactive ☢️
spin0
nuclear quadrupole moment
0
vrijeme otkrića ili izuma1922
Parnost+

77Se

Maseni broj77
neutron number43
Relativna atomska masa
76,91991415 ± 0,000000067 Da
g-factor
1,06712 ± 0,0001
natural abundance
7,6 ± 0,07
radioaktivnoststable isotope
Vrijeme poluraspadaNot Radioactive ☢️
spin1/2
nuclear quadrupole moment
0
vrijeme otkrića ili izuma1922
Parnost-

78Se

Maseni broj78
neutron number44
Relativna atomska masa
77,917309244 ± 0,000000191 Da
g-factor
0
natural abundance
23,69 ± 0,22
radioaktivnoststable isotope
Vrijeme poluraspadaNot Radioactive ☢️
spin0
nuclear quadrupole moment
0
vrijeme otkrića ili izuma1922
Parnost+

79Se

Maseni broj79
neutron number45
Relativna atomska masa
78,918499252 ± 0,000000238 Da
g-factor
−0,29085714285714 ± 0,0042857142857143
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
327 ± 28 ky
spin7/2
nuclear quadrupole moment
0,8 ± 0,2
vrijeme otkrića ili izuma1950
Parnost+

decay modeintensity
β (β decay)100%

80Se

Maseni broj80
neutron number46
Relativna atomska masa
79,916521761 ± 0,000001016 Da
g-factor
0
natural abundance
49,8 ± 0,36
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
spin0
nuclear quadrupole moment
0
vrijeme otkrića ili izuma1922
Parnost+

decay modeintensity
(double β decay)

81Se

Maseni broj81
neutron number47
Relativna atomska masa
80,917993019 ± 0,000001049 Da
g-factor
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
18,45 ± 0,12 m
spin1/2
nuclear quadrupole moment
0
vrijeme otkrića ili izuma1948
Parnost-

decay modeintensity
β (β decay)100%

82Se

Maseni broj82
neutron number48
Relativna atomska masa
81,916699531 ± 0,0000005 Da
g-factor
0
natural abundance
8,82 ± 0,15
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
87,6 ± 1,5 Ey
spin0
nuclear quadrupole moment
0
vrijeme otkrića ili izuma1922
Parnost+

decay modeintensity
(double β decay)100%

83Se

Maseni broj83
neutron number49
Relativna atomska masa
82,919118604 ± 0,000003259 Da
g-factor
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
22,25 ± 0,04 m
spin9/2
nuclear quadrupole moment
vrijeme otkrića ili izuma1937
Parnost+

decay modeintensity
β (β decay)100%

84Se

Maseni broj84
neutron number50
Relativna atomska masa
83,918466761 ± 0,000002105 Da
g-factor
0
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
3,26 ± 0,1 m
spin0
nuclear quadrupole moment
0
vrijeme otkrića ili izuma1960
Parnost+

decay modeintensity
β (β decay)100%

85Se

Maseni broj85
neutron number51
Relativna atomska masa
84,922260758 ± 0,000002804 Da
g-factor
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
32,9 ± 0,3 s
spin5/2
nuclear quadrupole moment
vrijeme otkrića ili izuma1960
Parnost

decay modeintensity
β (β decay)100%

86Se

Maseni broj86
neutron number52
Relativna atomska masa
85,924311732 ± 0,000002705 Da
g-factor
0
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
14,3 ± 0,3 s
spin0
nuclear quadrupole moment
0
vrijeme otkrića ili izuma1973
Parnost+

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

87Se

Maseni broj87
neutron number53
Relativna atomska masa
86,928688616 ± 0,000002405 Da
g-factor
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
5,5 ± 0,06 s
spin3/2
nuclear quadrupole moment
vrijeme otkrića ili izuma1968
Parnost+

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

88Se

Maseni broj88
neutron number54
Relativna atomska masa
87,93141749 ± 0,000003604 Da
g-factor
0
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
1,53 ± 0,06 s
spin0
nuclear quadrupole moment
0
vrijeme otkrića ili izuma1970
Parnost+

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

89Se

Maseni broj89
neutron number55
Relativna atomska masa
88,936669058 ± 0,000004003 Da
g-factor
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
430 ± 50 ms
spin5/2
nuclear quadrupole moment
vrijeme otkrića ili izuma1971
Parnost+

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

90Se

Maseni broj90
neutron number56
Relativna atomska masa
89,940096 ± 0,000354 Da
g-factor
0
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
210 ± 80 ms
spin0
nuclear quadrupole moment
0
vrijeme otkrića ili izuma1994
Parnost+

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

91Se

Maseni broj91
neutron number57
Relativna atomska masa
90,9457 ± 0,000465 Da
g-factor
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
270 ± 50 ms
spin1/2
nuclear quadrupole moment
0
vrijeme otkrića ili izuma1975
Parnost+

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

92Se

Maseni broj92
neutron number58
Relativna atomska masa
91,94984 ± 0,000429 Da
g-factor
0
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
spin0
nuclear quadrupole moment
0
vrijeme otkrića ili izuma1997
Parnost+

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

93Se

Maseni broj93
neutron number59
Relativna atomska masa
92,956135 ± 0,000429 Da
g-factor
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
spin1/2
nuclear quadrupole moment
0
vrijeme otkrića ili izuma1997
Parnost+

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

94Se

Maseni broj94
neutron number60
Relativna atomska masa
93,96049 ± 0,000537 Da
g-factor
0
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
spin0
nuclear quadrupole moment
0
vrijeme otkrića ili izuma1997
Parnost+

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

95Se

Maseni broj95
neutron number61
Relativna atomska masa
94,9673 ± 0,000537 Da
g-factor
natural abundance
radioaktivnost☢️ radioactive element
Vrijeme poluraspada
spin3/2
nuclear quadrupole moment
vrijeme otkrića ili izuma2010
Parnost+

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

povijest

otkrio/izumioJöns Berzelius
location of discoverySweden
vrijeme otkrića ili izuma1818
EtimologijaGreek: selênê (moon).
pronunciationsi-LEE-ni-em (engleski)

source

Obilnost
Zastupljenost u Zemljinoj kori
0,05 mg/kg
natural abundance (ocean)
0,0002 mg/L
natural abundance (tijelo)
0,000005 %
natural abundance (meteoroid)
0,0013 %
natural abundance (Sunce)
Zastupljenost u svemiru
0,000003 %

Nuclear Screening Constants

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