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Interactive Demos
 29

Cu

Copper

Copper General Information
 Categories
  • Class: Transition Metals
  • Period: 4
  • IUPAC group: 11
  • Traditional: Ib
History
  • Discovered in: ~ 5000 BC by
  • Origin of name: Latin: cuprum, (from Cyprus)
  • Historical or alternate name:
Common natural occurrences

Cuprite, malachite, azurite, chalcopyrite & bornite

Description

Pale to dark reddish, lustrous metal. Malleable and ductile. Resistant to air and water. Exposed surfaces form greenish Carbonate film.

Abundances
  • Atmosphere: ~0.0 ppm
  • Primitive mantle: 28.0 ppm
  • Sea water: 0.003 ppm
  • Metallic meteorite: 112.0 ppm
  • Continental crust: 75.0 ppm
  • Solar photosphere: 4.06 log of abundance
  • Oceanic crust: 86.0 ppm
  • Solar system: 514.0 relative to Si=1.0e6
Hazards and Tolerances

   Hazards

Metal dust poison by inhalation. Compounds harmful by ingestion..

   Human daily limits
  • Lower:1.0
  • Upper:100.0

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Copper Physical Properties

 Transitional Data

  • State: Solid
  • Density: 8.92 g/cm3

 Molar enthalpy

  • Atomization: 337.15 kJ mol-1
  • Fusion: 13.0 kJ mol-1
  • Vaporization: 306.7 kJ mol-1

 Transition points

  • Melting point: 1357.1 K
  • Boiling point: 2840.0 K
  • Critical temperature: 5421.0 K

 Molar properties

  • Atomic weight: 63.546 g/mole
  • Molar volume: 7.156 cm3 mol-1

 Crystal structure sequence

face-centered-cubic

 Thermodynamics

  • State: solid
    • Enthalpy 0
    • Gibbs function 0
    • Entropy 33.150
    • Heat Capacity 24.435
  • State: gas
    • Enthalpy 338.32
    • Gibbs function 298.58
    • Entropy 166.38
    • Heat Capacity 20.786

 Miscellaneous physical

  • Electrical resistivity: 1.6730 µ-ohms/cm
  • Debye temperature: 343.0 K
  • Thermal conductivity: 401.0 W / m / K
  • Coefficient of linear expansion: 16.6Coef. per K
  • Mass magnetic susceptibility: -1.081e-9
  • X-ray diffraction mass absorption coefficients:
    • CuK: 52.9 (µ/p)/cm2 g-1
    • MoK: 50.9 (µ/p)/cm2 g-1

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Copper Chemical Properties

 Chemical basics:

  • Oxidation states: +1 +2 +3
  • Molecular wt: 63.546 g/mole

 Radii

  • Covalent: 117 pm
  • Atomic: 128.0 pm
  • Van der Waals: pm

 Ions:

  • ion: +1 pm 77.0
  • ion: +2 pm 73.0
  • ion: +3 pm 54.0

 Covalent bonds

Bond:
Radius
Energy

 Effective nuclear charge

  • Slater: 4.20
  • Clementi: 5.84
  • Froese-Fischer: 8.07

 Electronegativity

  • Pauling: 1.9
  • Allred-Rochow: 1.75

 Standard reactions

oxidation =>
Cu+2 + 2CN- + e- =>
Cu+ + e- =>
Cu+2 + 2e- =>
Cu+2 + 2e- =>
Cu+2 + e- =>
CuI2- + e- =>
Cu2O + H2O + 2e- =>

reduction
Cu(CN)2-
Cu
Cu
Cu
Cu+
Cu + 2I-
2Cu + 2OH-
potential
1.12
0.52
0.35
0.337
0.153
0.00
-0.358

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Copper Nuclear Properties

Isotopes
Number of isotopes:
  • Known 11
  • Listed 2
Isotope range:
  • Known 58 - 68
  • Listed 63 - 65
Nuclide 63
  • % Occ.:Natural 69.17%
  • Mossbauer NRA:
  • Nuclear spin/Quantum no.: 3/2
  • Radioisotopes:
    • Half-life:
    • Decay mode:
    • Source:
  • Notes
Nuclide 65
  • % Occ.:Natural 30.83%
  • Mossbauer NRA:
  • Nuclear spin/Quantum no.: 3/2
  • Radioisotopes:
    • Half-life:
    • Decay mode:
    • Source:
  • Notes
Thermal neutron capture
  • Isotope Cross-section 3.8±0.1 barns
Nuclear magnetic resonance
Nuclide: 63
  • Absolute sensitivity: 6.43e-2 1H=1.0
  • Relative sensitivity: 9.31e-2 1H=1.0
  • Receptivity: 365 13C=1.0
  • Magnetogyric ratio: 7.0965e7 rad / T / s
  • Quadropole moment: -0.211e-28 m2
  • Frequency: 26.505 MHz
  • Reference: Cu(MeCN)4+BF4- in MeCN

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Copper Energy Properties

Electrons

  • Ground state electron configuration: [Ar] 3d10 4s1
  • Electron affinity: 118.3 kJ mol-1
  • Filling orbitals:

Spectral lines

 Wave length 2024.34
  • Relative intensity 2
  • Detection limits
    • Arc (ug/g)
    • Spark (ug/ml)
    • Flame emission (ug/ml)
    • Atomic absorption (ug/ml) 0.6 AA (5-50)
  • Notes:
 Wave length 2178.94
  • Relative intensity 8
  • Detection limits
    • Arc (ug/g)
    • Spark (ug/ml)
    • Flame emission (ug/ml)
    • Atomic absorption (ug/ml) 0.5 AA (10-50)
  • Notes:
 Wave length 2181.72
  • Relative intensity 6
  • Detection limits
    • Arc (ug/g)
    • Spark (ug/ml)
    • Flame emission (ug/ml)
    • Atomic absorption (ug/ml) 0.7 AA (10-50)
  • Notes:
 Wave length 2225.70
  • Relative intensity 4
  • Detection limits
    • Arc (ug/g)
    • Spark (ug/ml)
    • Flame emission (ug/ml)
    • Atomic absorption (ug/ml) 1.2 AA (5-500)
  • Notes:
 Wave length 2441.64
  • Relative intensity 4
  • Detection limits
    • Arc (ug/g)
    • Spark (ug/ml)
    • Flame emission (ug/ml)
    • Atomic absorption (ug/ml) 34 AA (10-500)
  • Notes:
 Wave length 2492.15
  • Relative intensity 36
  • Detection limits
    • Arc (ug/g)
    • Spark (ug/ml)
    • Flame emission (ug/ml)
    • Atomic absorption (ug/ml) 7 AA (10-100)
  • Notes:
 Wave length 3247.54
  • Relative intensity 5000
  • Detection limits
    • Arc (ug/g) 0.2
    • Spark (ug/ml) 0.2
    • Flame emission (ug/ml) 0.6 OA
    • Atomic absorption (ug/ml) 0.1 AA (1-10)
  • Notes:
 Wave length 3273.96
  • Relative intensity 2500
  • Detection limits
    • Arc (ug/g)
    • Spark (ug/ml) 0.05
    • Flame emission (ug/ml) 0.8 OA
    • Atomic absorption (ug/ml) 0.2 AA (1-10)
  • Notes:

 Ionization energies

Ionization level
Cu -> Cu+
Cu+ -> Cu+2
Ionization potential
745.4
1958

 Atomic energy levels

Orbital
ns
(n-1)d
(n-1)p
Energy
1.1098
1.6199
12.445

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