Arsen (As)

grundstof med atomnummer 33

Atomnummer	33
Atommasse	74.921595
mass number	75

Gruppe	15
Periode	4
Blok	p

proton	33 p⁺
neutron	42 n⁰
elektron	33 e^-

Fysisk Egenskab

Atomradius	115 pm 231 pm
molar volume	13,1 cm³/mol
Kovalent Radius	121 pm 114 pm 106 pm 126 pm 119 pm
Metallic Radius	121 pm 148 pm
Ionisk radius	58 pm 33,5 pm 46 pm
Crystal Radius	72 pm 47,5 pm 60 pm
Van der Waals-radius	205 pm 185 pm 415 pm 185 pm 236 pm 423 pm
massefylde	5,75 g/cm³ 5.220 kg/m³

Kemisk Egenskab

energi

proton affinity
electron affinity	0,804 eV/particle
ioniseringsenergi	9,789 eV/particle 18,5892 eV/particle 28,349 eV/particle 50,15 eV/particle 62,767 eV/particle 121,19 eV/particle 147 eV/particle 180 eV/particle 213 eV/particle 247 eV/particle 296 eV/particle 333 eV/particle 375 eV/particle 418 eV/particle 460 eV/particle 587,6 eV/particle 628,82 eV/particle 672,9 eV/particle 728,9 eV/particle 774 eV/particle 814 eV/particle 911,7 eV/particle 956,791 eV/particle 2.357 eV/particle 2.486 eV/particle 2.626 eV/particle 2.766 eV/particle 2.938 eV/particle 3.088,1 eV/particle 3.287 eV/particle 3.411,643 eV/particle 14.447,6778 eV/particle 15.028,906 eV/particle

Fordampningsvarme	32,4 kJ/mol
smeltevarme
standard enthalpy of formation	302,5 kJ/mol
elektron

Elektronskal	2, 8, 18, 5

Valenselektron	5 ⓘ

electron configuration	[Ar] 3d¹⁰ 4s² 4p³ⓘ 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p³

Oxidationstrin	-3, -2, -1, 0, 1, 2, 3, 4, 5
Elektronegativitet	13,08 eV/particle 0.2068208 2.18
Electrophilicity Index	1,5610969532554257 eV/particle
fundamental state of matter

stoffase	Fast stof
gaseous state of matter
Kogepunkt	889,15 K
Smeltepunkt	1.090,15 K
critical pressure	22,3 MPa
critical temperature	1.673,15 K
trippelpunkt	1.090,15 K 3.700 kPa
appearance
farve	Silver #ff1493 #bd80e3 #bd80e3
appearance	metallic grey
Brydningsindeks	1,001552
materialeegenskab
Varmeledningsevne
Termisk ekspansion
molar heat capacity	24,64 J/(mol K)
Varmefylde	0,329 J/(g⋅K)
Adiabateksponenten
electrical properties
type	Conductor
specifik ledningsevne	3,3 MS/m
Elektrisk resistivitet	0,0000003 Ω*m
superledning
Magnetisme
type	diamagnetic
magnetic susceptibility (Mass)	-0,0000000039 m³/Kg
magnetic susceptibility (Molar)	-0,000000000292 m³/mol
magnetic susceptibility (Volume)	-0,0000223
magnetic ordering
Curietemperaturen
Néel temperature
struktur
Krystalstruktur	Simpel Trigonal (RHL)
lattice constant	4,13 Å
Lattice Angles	π/2, π/2, 2 π/3
mechanical property
hårdhed	1.440 MPa 3,5 MPa
Kompressibilitetsmodul	22 GPa
Forskydningsmodul
E-modul	8 GPa
Poissons forhold
speed of sound
klassificering
Kategori	Halvmetaller, Metalloids
CAS Group	VB
IUPAC Group	VA
Glawe Number	90
Mendeleev Number	95
Pettifor Number	89
Geochemical Class	semi-volatile
Goldschmidt classification	chalcophile

øvrige

Gas Basicity
polarizability	30 ± 1 a₀
C6 Dispersion Coefficient	246 a₀ 260 a₀
allotrope	Yellow Arsenic, Black Arsenic, Gray Arsenic
Neutron cross section	4,2
Neutron Mass Absorption	0,002
quantum number	4S3/2
rumgruppe	166 (R_3m)

Isotopes of Arsenic

Stable Isotopes	1
Unstable Isotopes	32
Natural Isotopes	1

⁶⁰As

mass number	60
neutron number	27
Relative Atomic Mass	59,993945 ± 0,000429 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid
spin	5
nuclear quadrupole moment
opdagelsesdato
Paritet	+

decay mode	Intensitet
p (proton emission)

⁶¹As

mass number	61
neutron number	28
Relative Atomic Mass	60,981535 ± 0,000322 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid
spin	3/2
nuclear quadrupole moment
opdagelsesdato
Paritet	-

decay mode	Intensitet
p (proton emission)

⁶²As

mass number	62
neutron number	29
Relative Atomic Mass	61,973784 ± 0,000322 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid
spin	1
nuclear quadrupole moment
opdagelsesdato
Paritet	+

decay mode	Intensitet
p (proton emission)

⁶³As

mass number	63
neutron number	30
Relative Atomic Mass	62,964036 ± 0,000215 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid
spin	3/2
nuclear quadrupole moment
opdagelsesdato
Paritet	-

decay mode	Intensitet
p (proton emission)

⁶⁴As

mass number	64
neutron number	31
Relative Atomic Mass	63,95756 ± 0,000218 Da
g-factor	0
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	69 ± 1,4 ms
spin	0
nuclear quadrupole moment	0
opdagelsesdato	1995
Paritet	+

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

⁶⁵As

mass number	65
neutron number	32
Relative Atomic Mass	64,949611 ± 0,000091 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	130,3 ± 0,6 ms
spin	3/2
nuclear quadrupole moment
opdagelsesdato	1991
Paritet	-

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

⁶⁶As

mass number	66
neutron number	33
Relative Atomic Mass	65,944148778 ± 0,0000061 Da
g-factor	0
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	95,77 ± 0,23 ms
spin	0
nuclear quadrupole moment	0
opdagelsesdato	1978
Paritet	+

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

⁶⁷As

mass number	67
neutron number	34
Relative Atomic Mass	66,93925111 ± 0,000000475 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	42,5 ± 1,2 s
spin	5/2
nuclear quadrupole moment
opdagelsesdato	1980
Paritet	-

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

⁶⁸As

mass number	68
neutron number	35
Relative Atomic Mass	67,936774127 ± 0,000001981 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	151,6 ± 0,8 s
spin	3
nuclear quadrupole moment
opdagelsesdato	1971
Paritet	+

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

⁶⁹As

mass number	69
neutron number	36
Relative Atomic Mass	68,932246289 ± 0,000034352 Da
g-factor	0,6488 ± 0,0008
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	15,2 ± 0,2 m
spin	5/2
nuclear quadrupole moment
opdagelsesdato	1955
Paritet	-

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

⁷⁰As

mass number	70
neutron number	37
Relative Atomic Mass	69,930934642 ± 0,0000015 Da
g-factor	0,5276 ± 0,000125
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	52,6 ± 0,3 m
spin	4
nuclear quadrupole moment	0,09 ± 0,02
opdagelsesdato	1950
Paritet	+

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

⁷¹As

mass number	71
neutron number	38
Relative Atomic Mass	70,927113594 ± 0,000004469 Da
g-factor	0,6692 ± 0,0008
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	65,3 ± 0,07 h
spin	5/2
nuclear quadrupole moment	-0,021 ± 0,006
opdagelsesdato	1939
Paritet	-

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

⁷²As

mass number	72
neutron number	39
Relative Atomic Mass	71,926752291 ± 0,000004383 Da
g-factor	-1,0805 ± 0,0003
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	26 ± 0,1 h
spin	2
nuclear quadrupole moment	-0,08 ± 0,02
opdagelsesdato	1939
Paritet	-

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

⁷³As

mass number	73
neutron number	40
Relative Atomic Mass	72,923829086 ± 0,000004136 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	80,3 ± 0,06 d
spin	3/2
nuclear quadrupole moment
opdagelsesdato	1948
Paritet	-

decay mode	Intensitet
ϵ (electron capture)	100%

⁷⁴As

mass number	74
neutron number	41
Relative Atomic Mass	73,923928596 ± 0,000001817 Da
g-factor	-0,798 ± 0,0015
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	17,77 ± 0,02 d
spin	2
nuclear quadrupole moment
opdagelsesdato	1938
Paritet	-

decay mode	Intensitet
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	66%
β⁻ (β⁻ decay)	34%

⁷⁵As

mass number	75
neutron number	42
Relative Atomic Mass	74,921594562 ± 0,000000948 Da
g-factor
natural abundance	100
radioaktivitet	stable isotope
halveringstid	Not Radioactive ☢️
spin	3/2
nuclear quadrupole moment	0,311 ± 0,002
opdagelsesdato	1920
Paritet	-

⁷⁶As

mass number	76
neutron number	43
Relative Atomic Mass	75,922392011 ± 0,000000951 Da
g-factor	0,45115 ± 0,0005
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	1,0933 ± 0,0038 d
spin	2
nuclear quadrupole moment
opdagelsesdato	1934
Paritet	-

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

⁷⁷As

mass number	77
neutron number	44
Relative Atomic Mass	76,920647555 ± 0,000001816 Da
g-factor	0,86266666666667 ± 0,00086666666666667
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	38,79 ± 0,05 h
spin	3/2
nuclear quadrupole moment
opdagelsesdato	1951
Paritet	-

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

⁷⁸As

mass number	78
neutron number	45
Relative Atomic Mass	77,921827771 ± 0,000010498 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	90,7 ± 0,2 m
spin	2
nuclear quadrupole moment
opdagelsesdato	1937
Paritet	-

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

⁷⁹As

mass number	79
neutron number	46
Relative Atomic Mass	78,920948419 ± 0,000005716 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	9,01 ± 0,15 m
spin	3/2
nuclear quadrupole moment
opdagelsesdato	1950
Paritet	-

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

⁸⁰As

mass number	80
neutron number	47
Relative Atomic Mass	79,92247444 ± 0,000003578 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	15,2 ± 0,2 s
spin	1
nuclear quadrupole moment
opdagelsesdato	1954
Paritet	+

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

⁸¹As

mass number	81
neutron number	48
Relative Atomic Mass	80,922132288 ± 0,000002838 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	33,3 ± 0,8 s
spin	3/2
nuclear quadrupole moment
opdagelsesdato	1960
Paritet	-

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

⁸²As

mass number	82
neutron number	49
Relative Atomic Mass	81,924738731 ± 0,000004003 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	19,1 ± 0,5 s
spin	2
nuclear quadrupole moment
opdagelsesdato	1968
Paritet	-

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

⁸³As

mass number	83
neutron number	50
Relative Atomic Mass	82,9252069 ± 0,000003004 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	13,4 ± 0,4 s
spin	5/2
nuclear quadrupole moment
opdagelsesdato	1968
Paritet	-

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

⁸⁴As

mass number	84
neutron number	51
Relative Atomic Mass	83,92930329 ± 0,000003403 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	3,16 ± 0,58 s
spin	2
nuclear quadrupole moment
opdagelsesdato	1968
Paritet	-

decay mode	Intensitet
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	0.28%

⁸⁵As

mass number	85
neutron number	52
Relative Atomic Mass	84,932163658 ± 0,000003304 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	2,022 ± 0,007 s
spin	5/2
nuclear quadrupole moment
opdagelsesdato	1967
Paritet	-

decay mode	Intensitet
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	62.6%

⁸⁶As

mass number	86
neutron number	53
Relative Atomic Mass	85,936701532 ± 0,000003703 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	945 ± 8 ms
spin	1
nuclear quadrupole moment
opdagelsesdato	1973
Paritet	-

decay mode	Intensitet
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	35.5%
2n (2-neutron emission)

⁸⁷As

mass number	87
neutron number	54
Relative Atomic Mass	86,940291716 ± 0,000003204 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	492 ± 25 ms
spin	5/2
nuclear quadrupole moment
opdagelsesdato	1970
Paritet	-

decay mode	Intensitet
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	15.4%
2n (2-neutron emission)

⁸⁸As

mass number	88
neutron number	55
Relative Atomic Mass	87,94584 ± 0,000215 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	270 ± 150 ms
spin
nuclear quadrupole moment
opdagelsesdato	1994
Paritet

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

⁸⁹As

mass number	89
neutron number	56
Relative Atomic Mass	88,950048 ± 0,000322 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid
spin	5/2
nuclear quadrupole moment
opdagelsesdato	1994
Paritet	-

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

⁹⁰As

mass number	90
neutron number	57
Relative Atomic Mass	89,955995 ± 0,000429 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid
spin
nuclear quadrupole moment
opdagelsesdato	1997
Paritet

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

⁹¹As

mass number	91
neutron number	58
Relative Atomic Mass	90,960816 ± 0,000429 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid
spin	5/2
nuclear quadrupole moment
opdagelsesdato	1997
Paritet	-

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

⁹²As

mass number	92
neutron number	59
Relative Atomic Mass	91,967386 ± 0,000537 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid
spin
nuclear quadrupole moment
opdagelsesdato	1997
Paritet

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

historie

opdager eller opfinder	Known to the ancients.
fundsted
opdagelsesdato
etymologi	Greek: arsenikon; Latin: arsenicum, (both names for yellow pigment).
udtale	AR-s'n-ik (engelsk)

source

Forekomst
Abundance in Earth's crust	1,8 mg/kg
natural abundance (verdenshave)	0,0037 mg/L
natural abundance (menneskelige krop)	0,000005 %
natural abundance (Meteoroid)	0,00018 %
natural abundance (Solen)
Abundance in Universe	0,0000008 %

Nuclear Screening Constants

1	s	0.7217
2	p	3.9264
2	s	8.873
3	d	15.6216
3	p	15.1503
3	s	14.4045
4	p	25.5508
4	s	24.056

Arsen on ChemicalAid

AUT NKC	ph138910
Australian Educational Vocabulary ID	scot/1661
BNCF	25597
BNF	11971740q
Banglapedia ID (Bengali)	আর্সেনিক
Brockhaus Enzyklopädie online ID	arsen
CAB ID	43961
CA PROP 65 ID	arsenic
CAS-nummer	7440-38-2
ChEBI-ID	27563
ChemSpider ID	4514330
DSSTOX compound identifier	DTXCID703886
DSSTox substance ID	DTXSID4023886
De Agostini ID	arsènico+(sostantivo)
Den Store Danske-ID	arsen
ECHA Substance Infocard ID	100.028.316
Enciclopedia Treccani	arsenico
Encyclopedia of China ID (Second Edition)	229020
Encyclopædia Universalis-ID	arsenic-toxicologie
Encyclopædia Universalis-ID	arsenic
Encyclopédie berbère article ID	2598
Freebase-ID	/m/027rq1r
French Vikidia ID	Arsenic
GND-identifikator	4003041-6
Gujarati Vishwakosh entry	આર્સેનિક
HCIS ID	287
HSDB-ID	509
ICSC ID	0013
InChI	InChI=1S/As
InChIKey	RQNWIZPPADIBDY-UHFFFAOYSA-N
KBpedia ID	Arsenic
KEGG-ID	C06269
Krugosvet article	nauka_i_tehnika/himiya/MISHYAK.html
Krugosvet article	meditsina/myshyak-i-zdorove-cheloveka
LCAuth	sh85007449
LNB id	000306779
LiverTox ID	Arsenic
MeSH ID	D001151
NALT ID	12370
NDF-RT ID	N0000022206
NDL-nummer	00563271
NE.se ID	arsenik
National Library of Israel J9U ID	987007294803405171
OmegaWiki-betydningsdefinition	255
OpenAlex ID	C502230775
OpenAlex ID	C2910930242
PACTOLS thesaurus ID	pcrt5mFxzmQ9rX
PM20 ware ID	142006
PSH-ID	5803
PubChem CID	5359596
Quora emne-ID	Arsenic-As
RxNorm ID	1111
Spanish Cultural Heritage thesauri ID	materias/1009757
Store katalanske encyklopædi-ID	0005554
Store medisinske leksikon ID	arsen
Store norske leksikon-ID	arsen
Store russiske encyklopædi Online-ID	2241159
U.S. National Archives Identifier	10637420
UK Archival Thesaurus ID	f2/mt225/4347/7620
UMLS CUI	C0003818
UNII	N712M78A8G
USGS Thesaurus ID	1396
WikiSkripta ID	32671
Wolfram Language entity code	Entity["Mineral", "Arsenic"]
WordNet 3.1 Synset ID	14653327-n
YSO ID	9329
ZVG-nummer	8280

Arsen (As)

Fysisk Egenskab

Kemisk Egenskab

øvrige

Isotopes of Arsenic

60As

61As

62As

63As

64As

65As

66As

67As

68As

69As

70As

71As

72As

73As

74As

75As

76As

77As

78As

79As

80As

81As

82As

83As

84As

85As

86As

87As

88As

89As

90As

91As

92As

historie

source

Nuclear Screening Constants

⁶⁰As

⁶¹As

⁶²As

⁶³As

⁶⁴As

⁶⁵As

⁶⁶As

⁶⁷As

⁶⁸As

⁶⁹As

⁷⁰As

⁷¹As

⁷²As

⁷³As

⁷⁴As

⁷⁵As

⁷⁶As

⁷⁷As

⁷⁸As

⁷⁹As

⁸⁰As

⁸¹As

⁸²As

⁸³As

⁸⁴As

⁸⁵As

⁸⁶As

⁸⁷As

⁸⁸As

⁸⁹As

⁹⁰As

⁹¹As

⁹²As