Arsenicum (As)

chemical element with symbol As and atomic number 33

Atomic Number	33
Atomic Weight	74.921595
mass number	75

Group	15
Period	4
Block	p

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

Physical Property

Atomic Radius	115 pm 231 pm
molar volume	13.1 cm³/mol
Covalent Radius	121 pm 114 pm 106 pm 126 pm 119 pm
Metallic Radius	121 pm 148 pm
ionic 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
density	5.75 g/cm³ 5220 kg/m³

Chemical Property

{ERROR}

energia

proton affinity
electron affinity	0.804 eV/particle
ionization energy	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 2357 eV/particle 2486 eV/particle 2626 eV/particle 2766 eV/particle 2938 eV/particle 3088.1 eV/particle 3287 eV/particle 3411.643 eV/particle 14447.6778 eV/particle 15028.906 eV/particle

enthalpy of vaporization	32.4 kJ/mol
enthalpy of fusion
standard enthalpy of formation	302.5 kJ/mol
electron

Tegimen electronicum	2, 8, 18, 5

valence electron	5 ⓘ

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

oxidation number	-3, -2, -1, 0, 1, 2, 3, 4, 5
electronegativity	13.08 eV/particle 0.2068208 2.18
Electrophilicity Index	1.5610969532554257 eV/particle
fundamental state of matter

phase of matter
gaseous state of matter
Boiling Point	889.15 K
Melting Point	1090.15 K
critical pressure	22.3 MPa
critical temperature	1673.15 K
Punctum triplex	1090.15 K 3700 kPa
appearance
Color	Black #ff1493 #bd80e3 #bd80e3
appearance	metallic grey
refractive index	1.001552
thermodynamic material property
Thermal Conductivity
thermal expansion
molar heat capacity	24.64 J/(mol K)
Specific Heat Capacity	0.329 J/(g⋅K)
heat capacity ratio
electrical properties
type	Conductor
electrical conductivity	3.3 MS/m
electrical resistivity	0.0000003 Ω*m
Superconductrum
magnetism
type	diamagnetic
magnetic susceptibility (Mass)	-0.0000000039 m³/Kg
magnetic susceptibility (Molar)	-0.000000000292 m³/mol
magnetic susceptibility (Volume)	-0.0000223
magnetic ordering
Curie temperature
Néel temperature
structure
Crystal Structure	{ERROR}
lattice constant	4.13 Å
Lattice Angles	π/2, π/2, 2 π/3
mechanical property
hardness	1440 MPa 3.5 MPa
bulk modulus	22 GPa
shear modulus
Young's modulus	8 GPa
Poisson's ratio
celeritas soni
classificare
Category	Actinides, Metalloids
CAS Group	VB
IUPAC Group	VA
Glawe Number	90
Mendeleev Number	95
Pettifor Number	89
Geochemical Class	semi-volatile
Goldschmidt classification	chalcophile

other

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
space group	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
radioactivitas	☢️ radioactive element
half-life
Volubilitas	5
nuclear quadrupole moment
repertus
parity	+

decay mode	intensity
p (proton emission)

⁶¹As

mass number	61
neutron number	28
Relative Atomic Mass	60.981535 ± 0.000322 Da
g-factor
natural abundance
radioactivitas	☢️ radioactive element
half-life
Volubilitas	3/2
nuclear quadrupole moment
repertus
parity	-

decay mode	intensity
p (proton emission)

⁶²As

mass number	62
neutron number	29
Relative Atomic Mass	61.973784 ± 0.000322 Da
g-factor
natural abundance
radioactivitas	☢️ radioactive element
half-life
Volubilitas	1
nuclear quadrupole moment
repertus
parity	+

decay mode	intensity
p (proton emission)

⁶³As

mass number	63
neutron number	30
Relative Atomic Mass	62.964036 ± 0.000215 Da
g-factor
natural abundance
radioactivitas	☢️ radioactive element
half-life
Volubilitas	3/2
nuclear quadrupole moment
repertus
parity	-

decay mode	intensity
p (proton emission)

⁶⁴As

mass number	64
neutron number	31
Relative Atomic Mass	63.95756 ± 0.000218 Da
g-factor	0
natural abundance
radioactivitas	☢️ radioactive element
half-life	69 ± 1.4 ms
Volubilitas	0
nuclear quadrupole moment	0
repertus	1995
parity	+

decay mode	intensity
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
radioactivitas	☢️ radioactive element
half-life	130.3 ± 0.6 ms
Volubilitas	3/2
nuclear quadrupole moment
repertus	1991
parity	-

decay mode	intensity
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
radioactivitas	☢️ radioactive element
half-life	95.77 ± 0.23 ms
Volubilitas	0
nuclear quadrupole moment	0
repertus	1978
parity	+

decay mode	intensity
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
radioactivitas	☢️ radioactive element
half-life	42.5 ± 1.2 s
Volubilitas	5/2
nuclear quadrupole moment
repertus	1980
parity	-

decay mode	intensity
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
radioactivitas	☢️ radioactive element
half-life	151.6 ± 0.8 s
Volubilitas	3
nuclear quadrupole moment
repertus	1971
parity	+

decay mode	intensity
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
radioactivitas	☢️ radioactive element
half-life	15.2 ± 0.2 m
Volubilitas	5/2
nuclear quadrupole moment
repertus	1955
parity	-

decay mode	intensity
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
radioactivitas	☢️ radioactive element
half-life	52.6 ± 0.3 m
Volubilitas	4
nuclear quadrupole moment	0.09 ± 0.02
repertus	1950
parity	+

decay mode	intensity
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
radioactivitas	☢️ radioactive element
half-life	65.3 ± 0.07 h
Volubilitas	5/2
nuclear quadrupole moment	-0.021 ± 0.006
repertus	1939
parity	-

decay mode	intensity
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
radioactivitas	☢️ radioactive element
half-life	26 ± 0.1 h
Volubilitas	2
nuclear quadrupole moment	-0.08 ± 0.02
repertus	1939
parity	-

decay mode	intensity
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
radioactivitas	☢️ radioactive element
half-life	80.3 ± 0.06 d
Volubilitas	3/2
nuclear quadrupole moment
repertus	1948
parity	-

decay mode	intensity
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
radioactivitas	☢️ radioactive element
half-life	17.77 ± 0.02 d
Volubilitas	2
nuclear quadrupole moment
repertus	1938
parity	-

decay mode	intensity
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
radioactivitas	stable isotope
half-life	Not Radioactive ☢️
Volubilitas	3/2
nuclear quadrupole moment	0.311 ± 0.002
repertus	1920
parity	-

⁷⁶As

mass number	76
neutron number	43
Relative Atomic Mass	75.922392011 ± 0.000000951 Da
g-factor	0.45115 ± 0.0005
natural abundance
radioactivitas	☢️ radioactive element
half-life	1.0933 ± 0.0038 d
Volubilitas	2
nuclear quadrupole moment
repertus	1934
parity	-

decay mode	intensity
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
radioactivitas	☢️ radioactive element
half-life	38.79 ± 0.05 h
Volubilitas	3/2
nuclear quadrupole moment
repertus	1951
parity	-

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

⁷⁸As

mass number	78
neutron number	45
Relative Atomic Mass	77.921827771 ± 0.000010498 Da
g-factor
natural abundance
radioactivitas	☢️ radioactive element
half-life	90.7 ± 0.2 m
Volubilitas	2
nuclear quadrupole moment
repertus	1937
parity	-

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

⁷⁹As

mass number	79
neutron number	46
Relative Atomic Mass	78.920948419 ± 0.000005716 Da
g-factor
natural abundance
radioactivitas	☢️ radioactive element
half-life	9.01 ± 0.15 m
Volubilitas	3/2
nuclear quadrupole moment
repertus	1950
parity	-

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

⁸⁰As

mass number	80
neutron number	47
Relative Atomic Mass	79.92247444 ± 0.000003578 Da
g-factor
natural abundance
radioactivitas	☢️ radioactive element
half-life	15.2 ± 0.2 s
Volubilitas	1
nuclear quadrupole moment
repertus	1954
parity	+

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

⁸¹As

mass number	81
neutron number	48
Relative Atomic Mass	80.922132288 ± 0.000002838 Da
g-factor
natural abundance
radioactivitas	☢️ radioactive element
half-life	33.3 ± 0.8 s
Volubilitas	3/2
nuclear quadrupole moment
repertus	1960
parity	-

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

⁸²As

mass number	82
neutron number	49
Relative Atomic Mass	81.924738731 ± 0.000004003 Da
g-factor
natural abundance
radioactivitas	☢️ radioactive element
half-life	19.1 ± 0.5 s
Volubilitas	2
nuclear quadrupole moment
repertus	1968
parity	-

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

⁸³As

mass number	83
neutron number	50
Relative Atomic Mass	82.9252069 ± 0.000003004 Da
g-factor
natural abundance
radioactivitas	☢️ radioactive element
half-life	13.4 ± 0.4 s
Volubilitas	5/2
nuclear quadrupole moment
repertus	1968
parity	-

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

⁸⁴As

mass number	84
neutron number	51
Relative Atomic Mass	83.92930329 ± 0.000003403 Da
g-factor
natural abundance
radioactivitas	☢️ radioactive element
half-life	3.16 ± 0.58 s
Volubilitas	2
nuclear quadrupole moment
repertus	1968
parity	-

decay mode	intensity
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
radioactivitas	☢️ radioactive element
half-life	2.022 ± 0.007 s
Volubilitas	5/2
nuclear quadrupole moment
repertus	1967
parity	-

decay mode	intensity
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
radioactivitas	☢️ radioactive element
half-life	945 ± 8 ms
Volubilitas	1
nuclear quadrupole moment
repertus	1973
parity	-

decay mode	intensity
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
radioactivitas	☢️ radioactive element
half-life	492 ± 25 ms
Volubilitas	5/2
nuclear quadrupole moment
repertus	1970
parity	-

decay mode	intensity
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
radioactivitas	☢️ radioactive element
half-life	270 ± 150 ms
Volubilitas
nuclear quadrupole moment
repertus	1994
parity

decay mode	intensity
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
radioactivitas	☢️ radioactive element
half-life
Volubilitas	5/2
nuclear quadrupole moment
repertus	1994
parity	-

decay mode	intensity
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
radioactivitas	☢️ radioactive element
half-life
Volubilitas
nuclear quadrupole moment
repertus	1997
parity

decay mode	intensity
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
radioactivitas	☢️ radioactive element
half-life
Volubilitas	5/2
nuclear quadrupole moment
repertus	1997
parity	-

decay mode	intensity
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
radioactivitas	☢️ radioactive element
half-life
Volubilitas
nuclear quadrupole moment
repertus	1997
parity

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

historia

inventor	Known to the ancients.
location of discovery
repertus
Etymologia	Greek: arsenikon; Latin: arsenicum, (both names for yellow pigment).
pronunciation	AR-s'n-ik (English)

source

Abundance
Abundance in Earth's crust	1.8 mg/kg
natural abundance (Oceanus)	0.0037 mg/L
natural abundance (Corpus humanum)	0.000005 %
natural abundance (Meteoroides)	0.00018 %
natural abundance (Sol)
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

Arsenicum on ChemicalAid

Arsenicum (As)

Physical Property

Chemical Property

other

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

historia

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