Arsén

Arsén (As)

chemical element with symbol As and atomic number 33
Atomic Number33
Atomic Weight74.921595
Numero masico75
Group15
Period4
Blockp
Protón33 p+
Neutrón42 n0
Electrón33 e-
Animated Modelo atomico de Bohr of As (Arsén)

Physical Property

Radio Atomico
molar volume
Radio covalent
Metallic Radius
Radio ionico
Crystal Radius
Radio de van der Waals
density
Atomic Radii Of The Elements: Arsén0102030405060708090100110120130140150160170180190pmRadio AtomicoRadio CovalentMetallic RadiusRadio de van der Waals

Chemical Property

enerchía
proton affinity
Afinidat electronica
ionization energy
ionization energy of As (Arsén)
Entalpía de vaporización
entalpía de fusión
standard enthalpy of formation
Electrón
electron shell2, 8, 18, 5
Modelo atomico de Bohr: As (Arsén)
valence electron5
Lewis structure: As (Arsén)
electron configuration[Ar] 3d10 4s2 4p3
1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p3
Enhanced Modelo atomico de Bohr of As (Arsén)
Orbital Diagram of As (Arsén)
Numero d'oxidación-3, -2, -1, 0, 1, 2, 3, 4, 5
Electronegatividat
2.18
Electrophilicity Index
fundamental state of matter
phase of matterSolid
gaseous state of matter
Boiling Point
Melting Point
critical pressure
critical temperature
Punto triple
appearance
Color
Silver
appearancemetallic grey
refractive index
1.001552
thermodynamic material property
Thermal Conductivity
thermal expansion
molar heat capacity
Specific Heat Capacity
heat capacity ratio
electrical properties
typeConductor
electrical conductivity
electrical resistivity
superconductivity
magnetism
typediamagnetic
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 StructureSimple Trigonal (RHL)
lattice constant
Lattice Anglesπ/2, π/2, 2 π/3
mechanical property
hardness
bulk modulus
shear modulus
Young's modulus
Poisson's ratio
speed of sound
classification
CategoryMetalloids, Metalloids
CAS GroupVB
IUPAC GroupVA
Glawe Number90
Mendeleev Number95
Pettifor Number89
Geochemical Classsemi-volatile
Goldschmidt classificationchalcophile

other

Gas Basicity
polarizability
C6 Dispersion Coefficient
allotropeYellow Arsenic, Black Arsenic, Gray Arsenic
Neutron cross section
4.2
Neutron Mass Absorption
0.002
quantum number4S3/2
space group166 (R_3m)

Isotopes of Arsenic

Stable Isotopes1
Unstable Isotopes32
Natural Isotopes1

60As

Numero masico60
neutron number27
Relative Atomic Mass
g-factor
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
spin5
nuclear quadrupole moment
time of discovery or invention
parity+

decay modeintensity
p (proton emission)

61As

Numero masico61
neutron number28
Relative Atomic Mass
g-factor
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
spin3/2
nuclear quadrupole moment
time of discovery or invention
parity-

decay modeintensity
p (proton emission)

62As

Numero masico62
neutron number29
Relative Atomic Mass
g-factor
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
spin1
nuclear quadrupole moment
time of discovery or invention
parity+

decay modeintensity
p (proton emission)

63As

Numero masico63
neutron number30
Relative Atomic Mass
g-factor
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
spin3/2
nuclear quadrupole moment
time of discovery or invention
parity-

decay modeintensity
p (proton emission)

64As

Numero masico64
neutron number31
Relative Atomic Mass
g-factor
0
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
69 ± 1.4 ms
spin0
nuclear quadrupole moment
0
time of discovery or invention1995
parity+

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

65As

Numero masico65
neutron number32
Relative Atomic Mass
g-factor
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
130.3 ± 0.6 ms
spin3/2
nuclear quadrupole moment
time of discovery or invention1991
parity-

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

66As

Numero masico66
neutron number33
Relative Atomic Mass
g-factor
0
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
95.77 ± 0.23 ms
spin0
nuclear quadrupole moment
0
time of discovery or invention1978
parity+

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

67As

Numero masico67
neutron number34
Relative Atomic Mass
g-factor
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
42.5 ± 1.2 s
spin5/2
nuclear quadrupole moment
time of discovery or invention1980
parity-

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

68As

Numero masico68
neutron number35
Relative Atomic Mass
g-factor
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
151.6 ± 0.8 s
spin3
nuclear quadrupole moment
time of discovery or invention1971
parity+

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

69As

Numero masico69
neutron number36
Relative Atomic Mass
g-factor
0.6488 ± 0.0008
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
15.2 ± 0.2 m
spin5/2
nuclear quadrupole moment
time of discovery or invention1955
parity-

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

70As

Numero masico70
neutron number37
Relative Atomic Mass
g-factor
0.5276 ± 0.000125
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
52.6 ± 0.3 m
spin4
nuclear quadrupole moment
0.09 ± 0.02
time of discovery or invention1950
parity+

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

71As

Numero masico71
neutron number38
Relative Atomic Mass
g-factor
0.6692 ± 0.0008
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
65.3 ± 0.07 h
spin5/2
nuclear quadrupole moment
-0.021 ± 0.006
time of discovery or invention1939
parity-

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

72As

Numero masico72
neutron number39
Relative Atomic Mass
g-factor
-1.0805 ± 0.0003
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
26 ± 0.1 h
spin2
nuclear quadrupole moment
-0.08 ± 0.02
time of discovery or invention1939
parity-

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

73As

Numero masico73
neutron number40
Relative Atomic Mass
g-factor
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
80.3 ± 0.06 d
spin3/2
nuclear quadrupole moment
time of discovery or invention1948
parity-

decay modeintensity
ϵ (electron capture)100%

74As

Numero masico74
neutron number41
Relative Atomic Mass
g-factor
-0.798 ± 0.0015
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
17.77 ± 0.02 d
spin2
nuclear quadrupole moment
time of discovery or invention1938
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)66%
β (β decay)34%

75As

Numero masico75
neutron number42
Relative Atomic Mass
g-factor
natural abundance
100
Radioactividatstable isotope
Periodo de semidesintegraciónNot Radioactive ☢️
spin3/2
nuclear quadrupole moment
0.311 ± 0.002
time of discovery or invention1920
parity-

76As

Numero masico76
neutron number43
Relative Atomic Mass
g-factor
0.45115 ± 0.0005
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
1.0933 ± 0.0038 d
spin2
nuclear quadrupole moment
time of discovery or invention1934
parity-

decay modeintensity
β (β decay)100%

77As

Numero masico77
neutron number44
Relative Atomic Mass
g-factor
0.86266666666667 ± 0.00086666666666667
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
38.79 ± 0.05 h
spin3/2
nuclear quadrupole moment
time of discovery or invention1951
parity-

decay modeintensity
β (β decay)100%

78As

Numero masico78
neutron number45
Relative Atomic Mass
g-factor
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
90.7 ± 0.2 m
spin2
nuclear quadrupole moment
time of discovery or invention1937
parity-

decay modeintensity
β (β decay)100%

79As

Numero masico79
neutron number46
Relative Atomic Mass
g-factor
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
9.01 ± 0.15 m
spin3/2
nuclear quadrupole moment
time of discovery or invention1950
parity-

decay modeintensity
β (β decay)100%

80As

Numero masico80
neutron number47
Relative Atomic Mass
g-factor
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
15.2 ± 0.2 s
spin1
nuclear quadrupole moment
time of discovery or invention1954
parity+

decay modeintensity
β (β decay)100%

81As

Numero masico81
neutron number48
Relative Atomic Mass
g-factor
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
33.3 ± 0.8 s
spin3/2
nuclear quadrupole moment
time of discovery or invention1960
parity-

decay modeintensity
β (β decay)100%

82As

Numero masico82
neutron number49
Relative Atomic Mass
g-factor
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
19.1 ± 0.5 s
spin2
nuclear quadrupole moment
time of discovery or invention1968
parity-

decay modeintensity
β (β decay)100%

83As

Numero masico83
neutron number50
Relative Atomic Mass
g-factor
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
13.4 ± 0.4 s
spin5/2
nuclear quadrupole moment
time of discovery or invention1968
parity-

decay modeintensity
β (β decay)100%

84As

Numero masico84
neutron number51
Relative Atomic Mass
g-factor
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
3.16 ± 0.58 s
spin2
nuclear quadrupole moment
time of discovery or invention1968
parity-

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)0.28%

85As

Numero masico85
neutron number52
Relative Atomic Mass
g-factor
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
2.022 ± 0.007 s
spin5/2
nuclear quadrupole moment
time of discovery or invention1967
parity-

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)62.6%

86As

Numero masico86
neutron number53
Relative Atomic Mass
g-factor
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
945 ± 8 ms
spin1
nuclear quadrupole moment
time of discovery or invention1973
parity-

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)35.5%
2n (2-neutron emission)

87As

Numero masico87
neutron number54
Relative Atomic Mass
g-factor
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
492 ± 25 ms
spin5/2
nuclear quadrupole moment
time of discovery or invention1970
parity-

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)15.4%
2n (2-neutron emission)

88As

Numero masico88
neutron number55
Relative Atomic Mass
g-factor
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
270 ± 150 ms
spin
nuclear quadrupole moment
time of discovery or invention1994
parity

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

89As

Numero masico89
neutron number56
Relative Atomic Mass
g-factor
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
spin5/2
nuclear quadrupole moment
time of discovery or invention1994
parity-

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

90As

Numero masico90
neutron number57
Relative Atomic Mass
g-factor
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
spin
nuclear quadrupole moment
time of discovery or invention1997
parity

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

91As

Numero masico91
neutron number58
Relative Atomic Mass
g-factor
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
spin5/2
nuclear quadrupole moment
time of discovery or invention1997
parity-

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

92As

Numero masico92
neutron number59
Relative Atomic Mass
g-factor
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
spin
nuclear quadrupole moment
time of discovery or invention1997
parity

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

historia

discoverer or inventorKnown to the ancients.
location of discovery
time of discovery or invention
EtimolochíaGreek: arsenikon; Latin: arsenicum, (both names for yellow pigment).
pronunciationAR-s'n-ik (English)

source

Abundance
Abundance in Earth's crust
natural abundance (ocián)
natural abundance (human body)
0.000005 %
natural abundance (meteoroid)
0.00018 %
natural abundance (Sol)
Abundance in Universe
0.0000008 %

Nuclear Screening Constants

1s0.7217
2p3.9264
2s8.873
3d15.6216
3p15.1503
3s14.4045
4p25.5508
4s24.056