Seleen (Se)

chemical element with symbol Se and atomic number 34

Atomic Number	34
Atomic Weight	78.971
massiarv	80

Group	16
Period	4
Block	p

prooton	34 p⁺
neutron	46 n⁰
elektron	34 e^-

Animated Bohri aatomiteooria of Se (Seleen)

Füüsikalised Omadused

Aatomiraadius	115 pm 224 pm
molaarruumala	16,5 cm³/mol
Covalent Radius	116 pm 107 pm 107 pm 117 pm 120 pm
Metallic Radius	117 pm 140 pm
ionic radius	198 pm 50 pm 28 pm 42 pm
Crystal Radius	184 pm 64 pm 42 pm 56 pm
Van der Waals radius	190 pm 190 pm 403 pm 190 pm 229 pm 420,5 pm
density	4,809 g/cm³ 3 990 kg/m³

Keemilised Omadused

{ERROR}

energia

proton affinity
Elektronafiinsus	2,02067 eV/particle
ionization energy	9,752392 eV/particle 21,196 eV/particle 31,697 eV/particle 42,947 eV/particle 68,3 eV/particle 81,827 eV/particle 155,33 eV/particle 184 eV/particle 219 eV/particle 255 eV/particle 291 eV/particle 342,9 eV/particle 383 eV/particle 426 eV/particle 473 eV/particle 517 eV/particle 650,5 eV/particle 693,38 eV/particle 739,8 eV/particle 798 eV/particle 845,8 eV/particle 887 eV/particle 989,6 eV/particle 1 036,362 eV/particle 2 540,7 eV/particle 2 674 eV/particle 2 820 eV/particle 2 964 eV/particle 3 146 eV/particle 3 301,8 eV/particle 3 507 eV/particle 3 636,526 eV/particle 15 367,4907 eV/particle 15 968,083 eV/particle

aurustumissoojus	59,7 kJ/mol
sulamissoojus	5,23 kJ/mol
standard enthalpy of formation	227,2 kJ/mol
elektron

elektronkiht	2, 8, 18, 6

valentselektron	6 ⓘ

elektronkonfiguratsioon	[Ar] 3d¹⁰ 4s² 4p⁴ⓘ 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁴

oksüdatsiooniaste	-2, -1, 0, 1, 2, 3, 4, 5, 6
elektronegatiivsus	14,34 eV/particle 0.2240328 2.55
Electrophilicity Index	2,2408492709619536 eV/particle
fundamental state of matter

phase of matter
gaseous state of matter
Boiling Point	958,15 K 958,15 K
Melting Point	453,15 K 493,95 K
critical pressure	27,2 MPa
critical temperature	1 766,15 K 1 766,15 K
kolmikpunkt
Välimus
värvus	Black #ff1493 #ffa100 #ffa100
Välimus	black, red, and gray (not pictured) allotropes
Murdumisnäitaja	1,000895
thermodynamic material property
Thermal Conductivity	0,52 W/(m K)
soojuspaisumine
molar heat capacity	25,363 J/(mol K)
Specific Heat Capacity	0,321 J/(g⋅K)
heat capacity ratio
electrical properties
type
Elektrijuhtivus
Eritakistus
Ülijuhtivus
Magnetism
type	diamagnetic
Magnetiline vastuvõtlikkus (Mass)	−0,000000004 m³/Kg
Magnetiline vastuvõtlikkus (Molar)	−0,000000000316 m³/mol
Magnetiline vastuvõtlikkus (Volume)	−0,0000193
magnetic ordering
Curie punkt
Néel temperature
struktuur
Crystal Structure	{ERROR}
lattice constant	4,36 Å
Lattice Angles	π/2, 1.58493, π/2
mechanical property
kõvadus	736 MPa 2 MPa
Ruumpaisumismoodul	8,3 GPa
Nihkeelastsusmoodul	3,7 GPa
Normaalelastsusmoodul	10 GPa
Poissoni tegur	0,33
heli kiirus	3 350 m/s
Klassifitseerimine
Category	Actinides, Nonmetals
CAS Group	VIB
IUPAC Group	VIA
Glawe Number	95
Mendeleev Number	101
Pettifor Number	93
Geochemical Class	semi-volatile
Goldschmidt classification	chalcophile

teine

Gas Basicity
polarizability	28,9 ± 1 a₀
C6 Dispersion Coefficient	210 a₀ 233 a₀
allotrope	Amorphous Red Selenium, Amorphous Black Selenium, Monoclinic Selenium, Hexagonal Selenium
Neutron cross section	11,7
Neutron Mass Absorption	0,0056
Kvantarv	3P2
space group	14 (P121/c1)

Isotopes of Selenium

Stable Isotopes	3
Unstable Isotopes	30
Natural Isotopes	6

⁶³Se

massiarv	63
neutron number	29
Relative Atomic Mass	62,981911 ± 0,000537 Da
g-factor
natural abundance
radioaktiivsus	☢️ radioactive element
Poolestusaeg	13,2 ± 3,9 ms
spinn	3/2
nuclear quadrupole moment
avastamise aeg	2016
parity	-

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

⁶⁴Se

massiarv	64
neutron number	30
Relative Atomic Mass	63,971165 ± 0,000537 Da
g-factor	0
natural abundance
radioaktiivsus	☢️ radioactive element
Poolestusaeg	22,6 ± 0,2 ms
spinn	0
nuclear quadrupole moment	0
avastamise aeg	2005
parity	+

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

⁶⁵Se

massiarv	65
neutron number	31
Relative Atomic Mass	64,964552 ± 0,000322 Da
g-factor
natural abundance
radioaktiivsus	☢️ radioactive element
Poolestusaeg	34,2 ± 0,7 ms
spinn	3/2
nuclear quadrupole moment
avastamise aeg	1993
parity	-

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

⁶⁶Se

massiarv	66
neutron number	32
Relative Atomic Mass	65,955276 ± 0,000215 Da
g-factor	0
natural abundance
radioaktiivsus	☢️ radioactive element
Poolestusaeg	54 ± 4 ms
spinn	0
nuclear quadrupole moment	0
avastamise aeg	1993
parity	+

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

⁶⁷Se

massiarv	67
neutron number	33
Relative Atomic Mass	66,949994 ± 0,000072 Da
g-factor
natural abundance
radioaktiivsus	☢️ radioactive element
Poolestusaeg	133 ± 4 ms
spinn	5/2
nuclear quadrupole moment
avastamise aeg	1991
parity	-

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

⁶⁸Se

massiarv	68
neutron number	34
Relative Atomic Mass	67,941825236 ± 0,000000532 Da
g-factor	0
natural abundance
radioaktiivsus	☢️ radioactive element
Poolestusaeg	35,5 ± 0,7 s
spinn	0
nuclear quadrupole moment	0
avastamise aeg	1990
parity	+

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

⁶⁹Se

massiarv	69
neutron number	35
Relative Atomic Mass	68,939414845 ± 0,000001599 Da
g-factor
natural abundance
radioaktiivsus	☢️ radioactive element
Poolestusaeg	27,4 ± 0,2 s
spinn	1/2
nuclear quadrupole moment	0
avastamise aeg	1974
parity	-

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

⁷⁰Se

massiarv	70
neutron number	36
Relative Atomic Mass	69,933515521 ± 0,0000017 Da
g-factor	0
natural abundance
radioaktiivsus	☢️ radioactive element
Poolestusaeg	41,1 ± 0,3 m
spinn	0
nuclear quadrupole moment	0
avastamise aeg	1950
parity	+

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

⁷¹Se

massiarv	71
neutron number	37
Relative Atomic Mass	70,932209431 ± 0,000003 Da
g-factor
natural abundance
radioaktiivsus	☢️ radioactive element
Poolestusaeg	4,74 ± 0,05 m
spinn	5/2
nuclear quadrupole moment
avastamise aeg	1957
parity	-

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

⁷²Se

massiarv	72
neutron number	38
Relative Atomic Mass	71,927140506 ± 0,0000021 Da
g-factor	0
natural abundance
radioaktiivsus	☢️ radioactive element
Poolestusaeg	8,4 ± 0,08 d
spinn	0
nuclear quadrupole moment	0
avastamise aeg	1948
parity	+

decay mode	Intensiivsus
ϵ (electron capture)	100%

⁷³Se

massiarv	73
neutron number	39
Relative Atomic Mass	72,926754881 ± 0,000007969 Da
g-factor	0,19822222222222 ± 0,0028888888888889
natural abundance
radioaktiivsus	☢️ radioactive element
Poolestusaeg	7,15 ± 0,09 h
spinn	9/2
nuclear quadrupole moment
avastamise aeg	1948
parity	+

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

⁷⁴Se

massiarv	74
neutron number	40
Relative Atomic Mass	73,922475933 ± 0,000000015 Da
g-factor	0
natural abundance	0,86 ± 0,03
radioaktiivsus	☢️ radioactive element
Poolestusaeg
spinn	0
nuclear quadrupole moment	0
avastamise aeg	1922
parity	+

decay mode	Intensiivsus
2β⁺ (double β⁺ decay)

⁷⁵Se

massiarv	75
neutron number	41
Relative Atomic Mass	74,92252287 ± 0,000000078 Da
g-factor	0,2732 ± 0,004
natural abundance
radioaktiivsus	☢️ radioactive element
Poolestusaeg	119,78 ± 0,03 d
spinn	5/2
nuclear quadrupole moment	1,1 ± 0,2
avastamise aeg	1947
parity	+

decay mode	Intensiivsus
ϵ (electron capture)	100%

⁷⁶Se

massiarv	76
neutron number	42
Relative Atomic Mass	75,919213702 ± 0,000000017 Da
g-factor	0
natural abundance	9,23 ± 0,07
radioaktiivsus	Stabiilne isotoop
Poolestusaeg	Not Radioactive ☢️
spinn	0
nuclear quadrupole moment	0
avastamise aeg	1922
parity	+

⁷⁷Se

massiarv	77
neutron number	43
Relative Atomic Mass	76,91991415 ± 0,000000067 Da
g-factor	1,06712 ± 0,0001
natural abundance	7,6 ± 0,07
radioaktiivsus	Stabiilne isotoop
Poolestusaeg	Not Radioactive ☢️
spinn	1/2
nuclear quadrupole moment	0
avastamise aeg	1922
parity	-

⁷⁸Se

massiarv	78
neutron number	44
Relative Atomic Mass	77,917309244 ± 0,000000191 Da
g-factor	0
natural abundance	23,69 ± 0,22
radioaktiivsus	Stabiilne isotoop
Poolestusaeg	Not Radioactive ☢️
spinn	0
nuclear quadrupole moment	0
avastamise aeg	1922
parity	+

⁷⁹Se

massiarv	79
neutron number	45
Relative Atomic Mass	78,918499252 ± 0,000000238 Da
g-factor	−0,29085714285714 ± 0,0042857142857143
natural abundance
radioaktiivsus	☢️ radioactive element
Poolestusaeg	327 ± 28 ky
spinn	7/2
nuclear quadrupole moment	0,8 ± 0,2
avastamise aeg	1950
parity	+

decay mode	Intensiivsus
β⁻ (β⁻ decay)	100%

⁸⁰Se

massiarv	80
neutron number	46
Relative Atomic Mass	79,916521761 ± 0,000001016 Da
g-factor	0
natural abundance	49,8 ± 0,36
radioaktiivsus	☢️ radioactive element
Poolestusaeg
spinn	0
nuclear quadrupole moment	0
avastamise aeg	1922
parity	+

decay mode	Intensiivsus
2β⁻ (double β⁻ decay)

⁸¹Se

massiarv	81
neutron number	47
Relative Atomic Mass	80,917993019 ± 0,000001049 Da
g-factor
natural abundance
radioaktiivsus	☢️ radioactive element
Poolestusaeg	18,45 ± 0,12 m
spinn	1/2
nuclear quadrupole moment	0
avastamise aeg	1948
parity	-

decay mode	Intensiivsus
β⁻ (β⁻ decay)	100%

⁸²Se

massiarv	82
neutron number	48
Relative Atomic Mass	81,916699531 ± 0,0000005 Da
g-factor	0
natural abundance	8,82 ± 0,15
radioaktiivsus	☢️ radioactive element
Poolestusaeg	87,6 ± 1,5 Ey
spinn	0
nuclear quadrupole moment	0
avastamise aeg	1922
parity	+

decay mode	Intensiivsus
2β⁻ (double β⁻ decay)	100%

⁸³Se

massiarv	83
neutron number	49
Relative Atomic Mass	82,919118604 ± 0,000003259 Da
g-factor
natural abundance
radioaktiivsus	☢️ radioactive element
Poolestusaeg	22,25 ± 0,04 m
spinn	9/2
nuclear quadrupole moment
avastamise aeg	1937
parity	+

decay mode	Intensiivsus
β⁻ (β⁻ decay)	100%

⁸⁴Se

massiarv	84
neutron number	50
Relative Atomic Mass	83,918466761 ± 0,000002105 Da
g-factor	0
natural abundance
radioaktiivsus	☢️ radioactive element
Poolestusaeg	3,26 ± 0,1 m
spinn	0
nuclear quadrupole moment	0
avastamise aeg	1960
parity	+

decay mode	Intensiivsus
β⁻ (β⁻ decay)	100%

⁸⁵Se

massiarv	85
neutron number	51
Relative Atomic Mass	84,922260758 ± 0,000002804 Da
g-factor
natural abundance
radioaktiivsus	☢️ radioactive element
Poolestusaeg	32,9 ± 0,3 s
spinn	5/2
nuclear quadrupole moment
avastamise aeg	1960
parity

decay mode	Intensiivsus
β⁻ (β⁻ decay)	100%

⁸⁶Se

massiarv	86
neutron number	52
Relative Atomic Mass	85,924311732 ± 0,000002705 Da
g-factor	0
natural abundance
radioaktiivsus	☢️ radioactive element
Poolestusaeg	14,3 ± 0,3 s
spinn	0
nuclear quadrupole moment	0
avastamise aeg	1973
parity	+

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

⁸⁷Se

massiarv	87
neutron number	53
Relative Atomic Mass	86,928688616 ± 0,000002405 Da
g-factor
natural abundance
radioaktiivsus	☢️ radioactive element
Poolestusaeg	5,5 ± 0,06 s
spinn	3/2
nuclear quadrupole moment
avastamise aeg	1968
parity	+

decay mode	Intensiivsus
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	0.6%

⁸⁸Se

massiarv	88
neutron number	54
Relative Atomic Mass	87,93141749 ± 0,000003604 Da
g-factor	0
natural abundance
radioaktiivsus	☢️ radioactive element
Poolestusaeg	1,53 ± 0,06 s
spinn	0
nuclear quadrupole moment	0
avastamise aeg	1970
parity	+

decay mode	Intensiivsus
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	0.99%

⁸⁹Se

massiarv	89
neutron number	55
Relative Atomic Mass	88,936669058 ± 0,000004003 Da
g-factor
natural abundance
radioaktiivsus	☢️ radioactive element
Poolestusaeg	430 ± 50 ms
spinn	5/2
nuclear quadrupole moment
avastamise aeg	1971
parity	+

decay mode	Intensiivsus
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	7.8%

⁹⁰Se

massiarv	90
neutron number	56
Relative Atomic Mass	89,940096 ± 0,000354 Da
g-factor	0
natural abundance
radioaktiivsus	☢️ radioactive element
Poolestusaeg	210 ± 80 ms
spinn	0
nuclear quadrupole moment	0
avastamise aeg	1994
parity	+

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

⁹¹Se

massiarv	91
neutron number	57
Relative Atomic Mass	90,9457 ± 0,000465 Da
g-factor
natural abundance
radioaktiivsus	☢️ radioactive element
Poolestusaeg	270 ± 50 ms
spinn	1/2
nuclear quadrupole moment	0
avastamise aeg	1975
parity	+

decay mode	Intensiivsus
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	21%
2n (2-neutron emission)

⁹²Se

massiarv	92
neutron number	58
Relative Atomic Mass	91,94984 ± 0,000429 Da
g-factor	0
natural abundance
radioaktiivsus	☢️ radioactive element
Poolestusaeg
spinn	0
nuclear quadrupole moment	0
avastamise aeg	1997
parity	+

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

⁹³Se

massiarv	93
neutron number	59
Relative Atomic Mass	92,956135 ± 0,000429 Da
g-factor
natural abundance
radioaktiivsus	☢️ radioactive element
Poolestusaeg
spinn	1/2
nuclear quadrupole moment	0
avastamise aeg	1997
parity	+

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

⁹⁴Se

massiarv	94
neutron number	60
Relative Atomic Mass	93,96049 ± 0,000537 Da
g-factor	0
natural abundance
radioaktiivsus	☢️ radioactive element
Poolestusaeg
spinn	0
nuclear quadrupole moment	0
avastamise aeg	1997
parity	+

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

⁹⁵Se

massiarv	95
neutron number	61
Relative Atomic Mass	94,9673 ± 0,000537 Da
g-factor
natural abundance
radioaktiivsus	☢️ radioactive element
Poolestusaeg
spinn	3/2
nuclear quadrupole moment
avastamise aeg	2010
parity	+

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

ajalugu

leiutaja või avastaja	Jöns Berzelius
location of discovery	Sweden
avastamise aeg	1818
etümoloogia	Greek: selênê (moon).
pronunciation	si-LEE-ni-em (inglise)

allikas

Abundance
Abundance in Earth's crust	0,05 mg/kg
natural abundance (ookean)	0,0002 mg/L
natural abundance (Inimkeha)	0,000005 %
natural abundance (meteoorkeha)	0,0013 %
natural abundance (Päike)
Abundance in Universe	0,000003 %

Nuclear Screening Constants

1	s	0.7378
2	p	3.9348
2	s	9.1116
3	d	15.523
3	p	15.295
3	s	14.5966
4	p	25.7128
4	s	24.2424

Seleen on ChemicalAid

Seleen (Se)

Füüsikalised Omadused

Keemilised Omadused

teine

Isotopes of Selenium

63Se

64Se

65Se

66Se

67Se

68Se

69Se

70Se

71Se

72Se

73Se

74Se

75Se

76Se

77Se

78Se

79Se

80Se

81Se

82Se

83Se

84Se

85Se

86Se

87Se

88Se

89Se

90Se

91Se

92Se

93Se

94Se

95Se

ajalugu

allikas

Nuclear Screening Constants

⁶³Se

⁶⁴Se

⁶⁵Se

⁶⁶Se

⁶⁷Se

⁶⁸Se

⁶⁹Se

⁷⁰Se

⁷¹Se

⁷²Se

⁷³Se

⁷⁴Se

⁷⁵Se

⁷⁶Se

⁷⁷Se

⁷⁸Se

⁷⁹Se

⁸⁰Se

⁸¹Se

⁸²Se

⁸³Se

⁸⁴Se

⁸⁵Se

⁸⁶Se

⁸⁷Se

⁸⁸Se

⁸⁹Se

⁹⁰Se

⁹¹Se

⁹²Se

⁹³Se

⁹⁴Se

⁹⁵Se