Bakır tozu 250 GR

Bakır tozu 250 GR

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BC.100391.00250
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21,00 USD + KDV
Bakır 29Cu
Native copper (~4 cm in size)
Copper
Appearance Red-orange metallic luster
Standard atomic weight Ar°(Cu)
Copper in the periodic table
Hydrogen Helium
Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon
Sodium Magnesium Aluminium Silicon Phosphorus Sulfur Chlorine Argon
Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton
Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Silver Cadmium Indium Tin Antimony Tellurium Iodine Xenon
Caesium Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium Hafnium Tantalum Tungsten Rhenium Osmium Iridium Platinum Gold Mercury (element) Thallium Lead Bismuth Polonium Astatine Radon
Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium Darmstadtium Roentgenium Copernicium Nihonium Flerovium Moscovium Livermorium Tennessine Oganesson


Cu

Ag
nickel ← copper → zinc
Atomic number (Z) 29
Group group 11
Period period 4
Block   d-block
Electron configuration [Ar] 3d10 4s1
Electrons per shell 2, 8, 18, 1
Physical properties
Phase at STP solid
Melting point 1357.77 K ​(1084.62 °C, ​1984.32 °F)
Boiling point 2835 K ​(2562 °C, ​4643 °F)
Density (at 20° C) 8.935 g/cm3[3]
when liquid (at m.p.) 8.02 g/cm3
Heat of fusion 13.26 kJ/mol
Heat of vaporization 300.4 kJ/mol
Molar heat capacity 24.440 J/(mol·K)
Vapor pressure
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K) 1509 1661 1850 2089 2404 2834
Atomic properties
Oxidation states −2, 0,[4] +1+2, +3, +4 (a mildly basic oxide)
Electronegativity Pauling scale: 1.90
Ionization energies
  • 1st: 745.5 kJ/mol
  • 2nd: 1957.9 kJ/mol
  • 3rd: 3555 kJ/mol
  • (more)
Atomic radius empirical: 128 pm
Covalent radius 132±4 pm
Van der Waals radius 140 pm
Color lines in a spectral range
Spectral lines of copper
Other properties
Natural occurrence primordial
Crystal structure face-centered cubic (fcc) (cF4)
Lattice constant
Face-centered cubic crystal structure for copper
a = 361.50 pm (at 20 °C)[3]
Thermal expansion 16.64×10−6/K (at 20 °C)[3]
Thermal conductivity 401 W/(m⋅K)
Electrical resistivity 16.78 nΩ⋅m (at 20 °C)
Magnetic ordering diamagnetic[5]
Molar magnetic susceptibility −5.46×10−6 cm3/mol[6]
Young's modulus 110–128 GPa
Shear modulus 48 GPa
Bulk modulus 140 GPa
Speed of sound thin rod (annealed)
3810 m/s (at r.t.)
Poisson ratio 0.34
Mohs hardness 3.0
Vickers hardness 343–369 MPa
Brinell hardness 235–878 MPa
CAS Number 7440-50-8
History
Naming after Cyprus, principal mining place in Roman era (Cyprium)
Discovery Middle East (9000 BC)
Symbol "Cu": from Latin cuprum
Isotopes of copper
Main isotopes[7] Decay
abun­dance half-life (t1/2) mode pro­duct
63Cu 69.2% stable
64Cu synth 12.70 h β+ 64Ni
β 64Zn
65Cu 30.9% stable
67Cu synth 61.83 h β 67Zn
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Bakır tozu 250 GR BC.100391.00250
Bakır tozu 250 GR

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