Selenioa (Se)

34 zenbaki atomikoa duen elementu kimikoa

Atomic Number	34
Atomic Weight	78.971
masa-zenbaki	80

Group	16
Period	4
Block	p

protoi	34 p⁺
neutroi	46 n⁰
elektroi	34 e^-

Animated Bohrren eredu atomikoa of Se (Selenioa)

Propietate Fisiko

Erradio Atomiko	115 pm 224 pm
bolumen molar	16,5 cm³/mol
Erradio Kobalente	116 pm 107 pm 107 pm 117 pm 120 pm
Metallic Radius	117 pm 140 pm
Erradio ioniko	198 pm 50 pm 28 pm 42 pm
Crystal Radius	184 pm 64 pm 42 pm 56 pm
Van der Waalsen erradio	190 pm 190 pm 403 pm 190 pm 229 pm 420,5 pm
dentsitatea	4,809 g/cm³ 3.990 kg/m³

Magnitude Fisiko

energia

proton affinity
Afinitate elektroniko	2,02067 eV/particle
ionizazio energia	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

Irakite-entalpia	59,7 kJ/mol
urtze-entalpia	5,23 kJ/mol
formazio entalpia estandarra	227,2 kJ/mol
elektroi

elektroi geruza	2, 8, 18, 6

balentzia-elektroi	6 ⓘ

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

Oxidazio-egoera	-2, -1, 0, 1, 2, 3, 4, 5, 6
Elektronegatibotasun	14,34 eV/particle 0.2240328 2.55
Electrophilicity Index	2,2408492709619536 eV/particle
materiaren funtsezko egoera

materiaren egoera	Solid
materiaren egoera gaseoso
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
Puntu hirukoitz
appearance
kolore	Gray #ff1493 #ffa100 #ffa100
appearance	black, red, and gray (not pictured) allotropes
errefrakzio-indize	1,000895
thermodynamic material property
Thermal Conductivity	0,52 W/(m K)
Bero-dilatazio
molar heat capacity	25,363 J/(mol K)
Specific Heat Capacity	0,321 J/(g⋅K)
indize adiabatiko
electrical properties
type
Eroankortasun elektriko
Erresistibitate elektriko
Supereroankortasun
Magnetismo
type	diamagnetic
suszeptibilitate magnetiko (Mass)	−0,000000004 m³/Kg
suszeptibilitate magnetiko (Molar)	−0,000000000316 m³/mol
suszeptibilitate magnetiko (Volume)	−0,0000193
magnetic ordering
Curieren tenperatura
Néel temperature
egitura
Crystal Structure	Simple Monoclinic (HEX)
lattice constant	4,36 Å
Lattice Angles	π/2, 1.58493, π/2
materialen propietate mekaniko
Gogortasun	736 MPa 2 MPa
konprimagarritasun-modulu	8,3 GPa
Zizaila modulua	3,7 GPa
Youngen modulu	10 GPa
Poissonen modulu	0,33
Soinuaren lastertasun	3.350 m/s
classification
Category	Other nonmetals, Nonmetals
CAS Group	VIB
IUPAC Group	VIA
Glawe Number	95
Mendeleev Number	101
Pettifor Number	93
Geochemical Class	semi-volatile
Goldschmidt classification	chalcophile

beste batzuk

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
zenbaki kuantiko	3P2
talde espazial	14 (P121/c1)

Isotopes of Selenium

Stable Isotopes	3
Unstable Isotopes	30
Natural Isotopes	6

⁶³Se

masa-zenbaki	63
neutron number	29
Atomo-Masa Erlatibo	62,981911 ± 0,000537 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	13,2 ± 3,9 ms
spin	3/2
nuclear quadrupole moment
aurkikuntza-data	2016
parity	-

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

⁶⁴Se

masa-zenbaki	64
neutron number	30
Atomo-Masa Erlatibo	63,971165 ± 0,000537 Da
g-factor	0
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	22,6 ± 0,2 ms
spin	0
nuclear quadrupole moment	0
aurkikuntza-data	2005
parity	+

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

⁶⁵Se

masa-zenbaki	65
neutron number	31
Atomo-Masa Erlatibo	64,964552 ± 0,000322 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	34,2 ± 0,7 ms
spin	3/2
nuclear quadrupole moment
aurkikuntza-data	1993
parity	-

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

⁶⁶Se

masa-zenbaki	66
neutron number	32
Atomo-Masa Erlatibo	65,955276 ± 0,000215 Da
g-factor	0
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	54 ± 4 ms
spin	0
nuclear quadrupole moment	0
aurkikuntza-data	1993
parity	+

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

⁶⁷Se

masa-zenbaki	67
neutron number	33
Atomo-Masa Erlatibo	66,949994 ± 0,000072 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	133 ± 4 ms
spin	5/2
nuclear quadrupole moment
aurkikuntza-data	1991
parity	-

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

⁶⁸Se

masa-zenbaki	68
neutron number	34
Atomo-Masa Erlatibo	67,941825236 ± 0,000000532 Da
g-factor	0
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	35,5 ± 0,7 s
spin	0
nuclear quadrupole moment	0
aurkikuntza-data	1990
parity	+

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

⁶⁹Se

masa-zenbaki	69
neutron number	35
Atomo-Masa Erlatibo	68,939414845 ± 0,000001599 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	27,4 ± 0,2 s
spin	1/2
nuclear quadrupole moment	0
aurkikuntza-data	1974
parity	-

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

⁷⁰Se

masa-zenbaki	70
neutron number	36
Atomo-Masa Erlatibo	69,933515521 ± 0,0000017 Da
g-factor	0
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	41,1 ± 0,3 m
spin	0
nuclear quadrupole moment	0
aurkikuntza-data	1950
parity	+

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

⁷¹Se

masa-zenbaki	71
neutron number	37
Atomo-Masa Erlatibo	70,932209431 ± 0,000003 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	4,74 ± 0,05 m
spin	5/2
nuclear quadrupole moment
aurkikuntza-data	1957
parity	-

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

⁷²Se

masa-zenbaki	72
neutron number	38
Atomo-Masa Erlatibo	71,927140506 ± 0,0000021 Da
g-factor	0
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	8,4 ± 0,08 d
spin	0
nuclear quadrupole moment	0
aurkikuntza-data	1948
parity	+

decay mode	intensity
ϵ (electron capture)	100%

⁷³Se

masa-zenbaki	73
neutron number	39
Atomo-Masa Erlatibo	72,926754881 ± 0,000007969 Da
g-factor	0,19822222222222 ± 0,0028888888888889
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	7,15 ± 0,09 h
spin	9/2
nuclear quadrupole moment
aurkikuntza-data	1948
parity	+

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

⁷⁴Se

masa-zenbaki	74
neutron number	40
Atomo-Masa Erlatibo	73,922475933 ± 0,000000015 Da
g-factor	0
natural abundance	0,86 ± 0,03
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo
spin	0
nuclear quadrupole moment	0
aurkikuntza-data	1922
parity	+

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

⁷⁵Se

masa-zenbaki	75
neutron number	41
Atomo-Masa Erlatibo	74,92252287 ± 0,000000078 Da
g-factor	0,2732 ± 0,004
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	119,78 ± 0,03 d
spin	5/2
nuclear quadrupole moment	1,1 ± 0,2
aurkikuntza-data	1947
parity	+

decay mode	intensity
ϵ (electron capture)	100%

⁷⁶Se

masa-zenbaki	76
neutron number	42
Atomo-Masa Erlatibo	75,919213702 ± 0,000000017 Da
g-factor	0
natural abundance	9,23 ± 0,07
desintegrazio erradioaktibo	isotopo egonkor
Semidesintegrazio-periodo	Not Radioactive ☢️
spin	0
nuclear quadrupole moment	0
aurkikuntza-data	1922
parity	+

⁷⁷Se

masa-zenbaki	77
neutron number	43
Atomo-Masa Erlatibo	76,91991415 ± 0,000000067 Da
g-factor	1,06712 ± 0,0001
natural abundance	7,6 ± 0,07
desintegrazio erradioaktibo	isotopo egonkor
Semidesintegrazio-periodo	Not Radioactive ☢️
spin	1/2
nuclear quadrupole moment	0
aurkikuntza-data	1922
parity	-

⁷⁸Se

masa-zenbaki	78
neutron number	44
Atomo-Masa Erlatibo	77,917309244 ± 0,000000191 Da
g-factor	0
natural abundance	23,69 ± 0,22
desintegrazio erradioaktibo	isotopo egonkor
Semidesintegrazio-periodo	Not Radioactive ☢️
spin	0
nuclear quadrupole moment	0
aurkikuntza-data	1922
parity	+

⁷⁹Se

masa-zenbaki	79
neutron number	45
Atomo-Masa Erlatibo	78,918499252 ± 0,000000238 Da
g-factor	−0,29085714285714 ± 0,0042857142857143
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	327 ± 28 ky
spin	7/2
nuclear quadrupole moment	0,8 ± 0,2
aurkikuntza-data	1950
parity	+

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

⁸⁰Se

masa-zenbaki	80
neutron number	46
Atomo-Masa Erlatibo	79,916521761 ± 0,000001016 Da
g-factor	0
natural abundance	49,8 ± 0,36
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo
spin	0
nuclear quadrupole moment	0
aurkikuntza-data	1922
parity	+

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

⁸¹Se

masa-zenbaki	81
neutron number	47
Atomo-Masa Erlatibo	80,917993019 ± 0,000001049 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	18,45 ± 0,12 m
spin	1/2
nuclear quadrupole moment	0
aurkikuntza-data	1948
parity	-

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

⁸²Se

masa-zenbaki	82
neutron number	48
Atomo-Masa Erlatibo	81,916699531 ± 0,0000005 Da
g-factor	0
natural abundance	8,82 ± 0,15
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	87,6 ± 1,5 Ey
spin	0
nuclear quadrupole moment	0
aurkikuntza-data	1922
parity	+

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

⁸³Se

masa-zenbaki	83
neutron number	49
Atomo-Masa Erlatibo	82,919118604 ± 0,000003259 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	22,25 ± 0,04 m
spin	9/2
nuclear quadrupole moment
aurkikuntza-data	1937
parity	+

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

⁸⁴Se

masa-zenbaki	84
neutron number	50
Atomo-Masa Erlatibo	83,918466761 ± 0,000002105 Da
g-factor	0
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	3,26 ± 0,1 m
spin	0
nuclear quadrupole moment	0
aurkikuntza-data	1960
parity	+

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

⁸⁵Se

masa-zenbaki	85
neutron number	51
Atomo-Masa Erlatibo	84,922260758 ± 0,000002804 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	32,9 ± 0,3 s
spin	5/2
nuclear quadrupole moment
aurkikuntza-data	1960
parity

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

⁸⁶Se

masa-zenbaki	86
neutron number	52
Atomo-Masa Erlatibo	85,924311732 ± 0,000002705 Da
g-factor	0
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	14,3 ± 0,3 s
spin	0
nuclear quadrupole moment	0
aurkikuntza-data	1973
parity	+

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

⁸⁷Se

masa-zenbaki	87
neutron number	53
Atomo-Masa Erlatibo	86,928688616 ± 0,000002405 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	5,5 ± 0,06 s
spin	3/2
nuclear quadrupole moment
aurkikuntza-data	1968
parity	+

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

⁸⁸Se

masa-zenbaki	88
neutron number	54
Atomo-Masa Erlatibo	87,93141749 ± 0,000003604 Da
g-factor	0
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	1,53 ± 0,06 s
spin	0
nuclear quadrupole moment	0
aurkikuntza-data	1970
parity	+

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

⁸⁹Se

masa-zenbaki	89
neutron number	55
Atomo-Masa Erlatibo	88,936669058 ± 0,000004003 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	430 ± 50 ms
spin	5/2
nuclear quadrupole moment
aurkikuntza-data	1971
parity	+

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

⁹⁰Se

masa-zenbaki	90
neutron number	56
Atomo-Masa Erlatibo	89,940096 ± 0,000354 Da
g-factor	0
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	210 ± 80 ms
spin	0
nuclear quadrupole moment	0
aurkikuntza-data	1994
parity	+

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

⁹¹Se

masa-zenbaki	91
neutron number	57
Atomo-Masa Erlatibo	90,9457 ± 0,000465 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	270 ± 50 ms
spin	1/2
nuclear quadrupole moment	0
aurkikuntza-data	1975
parity	+

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

⁹²Se

masa-zenbaki	92
neutron number	58
Atomo-Masa Erlatibo	91,94984 ± 0,000429 Da
g-factor	0
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo
spin	0
nuclear quadrupole moment	0
aurkikuntza-data	1997
parity	+

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

⁹³Se

masa-zenbaki	93
neutron number	59
Atomo-Masa Erlatibo	92,956135 ± 0,000429 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo
spin	1/2
nuclear quadrupole moment	0
aurkikuntza-data	1997
parity	+

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

⁹⁴Se

masa-zenbaki	94
neutron number	60
Atomo-Masa Erlatibo	93,96049 ± 0,000537 Da
g-factor	0
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo
spin	0
nuclear quadrupole moment	0
aurkikuntza-data	1997
parity	+

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

⁹⁵Se

masa-zenbaki	95
neutron number	61
Atomo-Masa Erlatibo	94,9673 ± 0,000537 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo
spin	3/2
nuclear quadrupole moment
aurkikuntza-data	2010
parity	+

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

historia

aurkitzailea edo asmatzailea	Jöns Berzelius
aurkikuntzaren lekua	Sweden
aurkikuntza-data	1818
etimologia	Greek: selênê (moon).
pronunciation	si-LEE-ni-em (ingelesa)

source

Abundance
Abundance in Earth's crust	0,05 mg/kg
natural abundance (ozeano)	0,0002 mg/L
natural abundance (gizakiaren gorputza)	0,000005 %
natural abundance (Meteoroide)	0,0013 %
natural abundance (Eguzkia)
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

Selenioa on ChemicalAid

Art & Architecture Thesaurus-en identifikatzailea	300156319
Australian Educational Vocabulary ID	scot/3574
BNCF identifikatzailea	52421
BNE-ren identifikatzailea	XX534324
BnF	121383271
Brockhaus Enzyklopädie online ID	selen
CAS zenbakia	7782-49-2
ChEBI-ren identifikatzailea	27568
ChemSpider-ren identifikatzailea	4885617
DSSTOX compound identifier	DTXCID701261
DSSTox substance ID	DTXSID9021261
Den Store Danske ID	selen
DrugBank ID	11135
ECHA Substance Infocard ID	100.029.052
Encyclopædia Britannica Online-ren identifikatzailea	science/selenium
Encyclopædia Universalis ID	selenium
Freebase-ren identifikadorea	/m/025sf8g
French Vikidia ID	Sélénium
GEC-en identifikatzailea	0238414
GND identifikadorea	4180872-1
Great Russian Encyclopedia Online ID	3546300
HCIS ID	4102
HSDB ID	4493
Human Metabolome Database ID	HMDB0001349
ICSC ID	0072
InChI	InChI=1S/Se
InChIKey	BUGBHKTXTAQXES-UHFFFAOYSA-N
KBpedia ID	Selenium
KEGG-ren identifikatzailea	C01529
LCCN	sh85119688
MeSH identifikadorea	D012643
NALT ID	33437
NCI Drug Dictionary ID	selenium
NDF-RT ID	N0000148196
NDL-en identifikatzailea	00570819
NKC-ren identifikatzailea	ph127055
National Library of Israel J9U ID	987007529471405171
OmegaWikiren esanahiaren definizioa	3373
OpenAlex ID	C553756173
PSH identifikatzailea	5808
PatientsLikeMe treatment ID	selenium
Probes And Drugs ID	PD056990
PubChem-en identifikatzailea	6326970
Quora gaiaren identifikadorea	Selenium-2
Quora gaiaren identifikadorea	Selenium-element
RxNorm ID	9641
Store medisinske leksikon ID	selen
Store norske leksikon ID	selen
Treccani ID	selenio
UK Archival Thesaurus ID	f2/mt225/4347/9119
UMLS CUI	C0036581
UNII	H6241UJ22B
USGS Thesaurus ID	1572
WikiSkripta ID	12122
Wolfram Language entity code	Entity["Mineral", "Selenium"]
WordNet 3.1 Synset ID	14678354-n
YSO ID	10413
ZVG number	7340

Selenioa (Se)

Propietate Fisiko

Magnitude Fisiko

beste batzuk

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

historia

source

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