Copper . The element 29. 29 is the atomic number. Cu is the element symbol. Copper is the name of the element. 63.546 is the atomic mass. The group number is: 11 The period number is: 4. This is a picture of Copper. Physical Properties.
The element 29
1. Copper has a characteristic reddish brown color.
2. Its density is 8.93 g cm-3.
3. Its melting point is 1083`C.
4. It is highly malleable and ductile at ordinary temperature. It
becomes brittle near melting point.
5. It is a very good conductor of heat and electricity.
6. Its conductivity is almost as much as that of silver, the best conductor among all the metals.
63.546 g.mol -1
Electronegativity according to Pauling
8.9 g.cm-3 at 20°C
0.096 nm (+1) ; 0.069 nm (+3)
[ Ar ] 3d10 4s1
Energy of first ionisation
743.5 kJ.mol -1
Energy of second ionisation
1946 kJ.mol -1
+ 0.522 V ( Cu+/ Cu ) ; + 0.345 V (Cu2+/ Cu )
Copper is a chemical element with the symbol Cu. Atomic Number: 29. Atomic Weight: 63.546 atomic mass unit.
Copper comes from the Latin word cuprum, meaning “from the island of Cyprus.”
Copper is man’s oldest metal, dating back more than 10,000 years. A copper pendant discovered in what is now northern Iraq has been dated to about 8,700 B.C.
The Egyptians used the ankh symbol to denote copper in their system of hieroglyphs. It also represented eternal life.
Copper is one of the oldest metals known to civilization. Its uses and contributions continue to grow.
Copper is a vital and positive contributor to humankind and has improved our quality of life for centuries.
Copper is the only metal other than gold that has natural color. Other metals are either gray or white.
Over 400 copper alloys are in use today. Brass is an alloy of copper and zinc. Bronze is an alloy of copper and tin, aluminum, silicon, and beryllium.
Copper is vital to the health of humans, animals and plants and an essential part of the human diet. Copper-rich foods include dried beans, almonds, broccoli, chocolate, garlic, soybeans, peas, whole wheat products, and seafood.
Copper maximizes the performance of the products that contain it, helping save energy, CO2, money and lives