Qivx Inc. Integral Scientist Periodic Table: Properties of Arsenic, Element 33, As

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Arsenic

Styles	Standard	Bayley	Extended	Octet	Electron	Quantum
ISPT
	Element Properties: General - Physical - Chemical - Nuclear - Energy

Arsenic General Information
Categories Class: Non-Metals Period: 4 IUPAC group: 15 Traditional: Vb	History Discovered in: ~ 1250 by Albertus Magnus Origin of name: Latin: Arsenicum, (yellow orpiment) Historical or alternate name:
Common natural occurrences Realgar, orpiment & mispickel or arsenopyrite	Description Odorless, silver-grey metal. Soft and brittle. Resists water, acids and alkalis. Tarnishes in air, burns in Oxygen.
Abundances Atmosphere: ~0.0 ppm Primitive mantle: 0.10 ppm Sea water: 0.003 ppm Metallic meteorite: 1.91 ppm Continental crust: 1.0 ppm Solar photosphere: ~0.0 log of abundance Oceanic crust: 1.0 ppm Solar system: 6.79 relative to Si=1.0e6	Hazards and Tolerances Hazards Poison. Carcinogen. Compounds highly toxic by inhalation or ingestion. Danger of cumulative effects.. Human daily limits Lower:0.01 Upper:1.0

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Arsenic Physical Properties

Transitional Data

State: Solid
Density: 5.727 g/cm3

Molar enthalpy

Atomization: 301.42 kJ mol-1
Fusion: 27.7 kJ mol-1
Vaporization: 31.9 kJ mol-1

Transition points

Melting point: 1090.0 K
Boiling point: 886.0 K
Critical temperature: 2100.0 K

Molar properties

Atomic weight: 74.92159 g/mole
Molar volume: 13.039 cm3 mol-1

Crystal structure sequence

complex-rhombohedral <721 K < orthorhombic < melting point

Thermodynamics

State: solid
- Enthalpy 0
- Gibbs function 0
- Entropy 35.1
- Heat Capacity 24.64

State: gas
- Enthalpy 302.5
- Gibbs function 261.0
- Entropy 174.21
- Heat Capacity 20.786

Miscellaneous physical

Electrical resistivity: 33.3 µ-ohms/cm
Debye temperature: 282.0 K
Thermal conductivity: 50.0 W / m / K
Coefficient of linear expansion: 15.5Coef. per K
Mass magnetic susceptibility: -9.17e-10 (a)
X-ray diffraction mass absorption coefficients:

CuK: 83.4 (µ/p)/cm2 g-1
MoK: 69.7 (µ/p)/cm2 g-1

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Arsenic Chemical Properties

Chemical basics:

Oxidation states: -3 +3 +5
Molecular wt: 74.92159 g/mole

Radii

Covalent: 121 pm
Atomic: 121.0 pm
Van der Waals: 200 pm

Ions:

ion: +3 pm 58.0
ion: +5 pm 46.0

Covalent bonds

Bond:
As-H
As-C
As-O
As-F
As-Cl
As-As

Radius
151.9
198
178
171
216
244

Energy
245
200
477
464
293
348

Effective nuclear charge

Slater: 6.30
Clementi: 7.45
Froese-Fischer: 8.98

Electronegativity

Pauling: 2.0
Allred-Rochow: 2.20

Standard reactions

oxidation =>
AsO4-3 + 2H2O + 2e- =>
H3As04 + 2H+ + 2e- =>
As2O3 + 6H+ + 6e- =>
As + 3H+ + 3e- =>

reduction
AsO2- + 4OH-
HAsO2 + 2H2O
2As + 3H2O
H3As

potential
0.67
0.56
0.234
-0.54

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Arsenic Nuclear Properties
Isotopes
Number of isotopes: Known 14 Listed 3	Isotope range: Known 69 - 81 Listed 73 - 75
Nuclide 73 % Occ.:Natural Mossbauer NRA: Nuclear spin/Quantum no.: Radioisotopes: Half-life: 80.3 days Decay mode: E.C., Source: reactor Notes	Nuclide 74 % Occ.:Natural Mossbauer NRA: Nuclear spin/Quantum no.: Radioisotopes: Half-life: 17.8 days Decay mode: E.C., Beta+ Beta- Source: reactor Notes med
Nuclide 75 % Occ.:Natural 100.0% Mossbauer NRA: Nuclear spin/Quantum no.: 3/2 Radioisotopes: Half-life: Decay mode: Source: Notes
Thermal neutron capture Isotope Cross-section 4.30±0.10 barns
Nuclear magnetic resonance
Nuclide: 75 Absolute sensitivity: 2.51e-2 1H=1.0 Relative sensitivity: 2.51e-2 1H=1.0 Receptivity: 143 13C=1.0 Magnetogyric ratio: 4.5804e7 rad / T / s Quadropole moment: 0.3e-28 m2 Frequency: 17.126 MHz Reference: KAsF6

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Arsenic Energy Properties

Electrons

Ground state electron configuration: [Ar] 3d10 4s2 4p3
Electron affinity: 77 kJ mol-1
Filling orbitals:

Spectral lines

Wave length 1890.0 Relative intensity Detection limits Arc (ug/g) Spark (ug/ml) Flame emission (ug/ml) Atomic absorption (ug/ml) 1.7 AA; 2.8 AH Notes:	Wave length 1936.96 Relative intensity 17 Detection limits Arc (ug/g) Spark (ug/ml) Flame emission (ug/ml) Atomic absorption (ug/ml) 1.3 AAw(3-50) Notes:
Wave length Relative intensity Detection limits Arc (ug/g) Spark (ug/ml) Flame emission (ug/ml) Atomic absorption (ug/ml) 1.2 AH(3-100) Notes:	Wave length 1971.97 Relative intensity 28 Detection limits Arc (ug/g) Spark (ug/ml) Flame emission (ug/ml) Atomic absorption (ug/ml) 1.8 AAw(3-100) Notes:
Wave length Relative intensity Detection limits Arc (ug/g) Spark (ug/ml) Flame emission (ug/ml) Atomic absorption (ug/ml) 2.3 AH(3-100) Notes:	Wave length 2288.12 Relative intensity 44 Detection limits Arc (ug/g) Spark (ug/ml) 3 Flame emission (ug/ml) 4.0 OAnz Atomic absorption (ug/ml) Notes:
Wave length 2349.84 Relative intensity 85 Detection limits Arc (ug/g) 30 Spark (ug/ml) 3 Flame emission (ug/ml) 2.2 OAnz Atomic absorption (ug/ml) Notes:	Wave length 2780.22 Relative intensity 140 Detection limits Arc (ug/g) 50 Spark (ug/ml) 10 Flame emission (ug/ml) 13.0 OAnz Atomic absorption (ug/ml) Notes:

Ionization energies

Ionization level
As -> As+
As+ -> As+2

Ionization potential
947.0
1798

Atomic energy levels

Orbital
np
ns
(n-1)d

Energy
1.2700
2.7802
8.3334

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