{"id":7882,"date":"2018-05-28T19:22:28","date_gmt":"2018-05-28T19:22:28","guid":{"rendered":"https:\/\/www.experimentoscientificos.es\/?page_id=7882"},"modified":"2018-11-17T16:09:59","modified_gmt":"2018-11-17T16:09:59","slug":"cobre","status":"publish","type":"page","link":"https:\/\/www.experimentoscientificos.es\/en\/tabla-periodica\/cobre\/","title":{"rendered":"Copper"},"content":{"rendered":"

The\u00a0copper<\/b>\u00a0whose symbol is\u00a0Cu<\/b>is the chemical element with the atomic number\u00a029 <\/b>of the periodic table<\/a>. It is a transition metal with a reddish colour and metallic lustre and is characterised by being one of the best conductors of electricity (second only to silver). Thanks to its high electrical conductivity, ductility and malleability, it has become the most widely used material for making electrical cables and other electrical elements and electronic components.<\/p>\n

Copper forms part of a very large number of alloys which generally have better mechanical properties, although they have a lower electrical conductivity. The most important of these are known as bronzes and brasses. On the other hand, it is a durable metal because it can be recycled an almost unlimited number of times without losing its mechanical properties.<\/p>\n

\"cobre\"
copper<\/figcaption><\/figure>\n

PROPERTIES OF COPPER<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
General information<\/th>\n<\/tr>\n
Name, symbol, number<\/th>\nCopper, Cu, 29<\/td>\n<\/tr>\n
Chemical series<\/th>\nTransition metals<\/td>\n<\/tr>\n
Group, period, block<\/th>\n11, 4, d<\/td>\n<\/tr>\n
Atomic mass<\/th>\n63,536 u<\/td>\n<\/tr>\n
Electronic configuration<\/th>\n[Ar]3d10<\/sup>4s1<\/sup><\/td>\n<\/tr>\n
Mohs hardness<\/th>\n3,0<\/td>\n<\/tr>\n
Electrons per level<\/th>\n2, 8, 18, 1 (image)<\/td>\n<\/tr>\n
Atomic properties<\/th>\n<\/tr>\n
Average radius<\/th>\n135 pm<\/td>\n<\/tr>\n
Electronegativity<\/th>\n1,9 (Pauling scale)<\/span><\/td>\n<\/tr>\n
Atomic radius (calc)<\/span><\/th>\n145 pm (Bohr radius)<\/span><\/td>\n<\/tr>\n
Covalent radius<\/th>\n138 pm<\/td>\n<\/tr>\n
van der Waals radius<\/th>\n140 pm<\/td>\n<\/tr>\n
Oxidation State(s)<\/th>\n+1, +2<\/b>, +3<\/i>, +4<\/i><\/td>\n<\/tr>\n
Rust<\/th>\nSlightly basic<\/td>\n<\/tr>\n
1.\u00aa Ionisation energy<\/span><\/th>\n745.5 kJ\/mol<\/td>\n<\/tr>\n
2.\u00aa Ionisation energy<\/span><\/th>\n1957.9 kJ\/mol<\/td>\n<\/tr>\n
3.\u00aa Ionisation energy<\/span><\/th>\n3555 kJ\/mol<\/td>\n<\/tr>\n
4.\u00aa Ionisation energy<\/span><\/th>\n5536 kJ\/mol<\/td>\n<\/tr>\n
Physical properties<\/th>\n<\/tr>\n
Ordinary status<\/th>\nSolid (diamagnetic)<\/td>\n<\/tr>\n
Density<\/th>\n8960 kg\/m3<\/sup><\/td>\n<\/tr>\n
Melting point<\/th>\n1357.77 K (1084.62 \u00b0C)[<\/span>3]<\/span><\/sup>\u200b<\/td>\n<\/tr>\n
Boiling point<\/th>\n2835 K (2562 \u00b0C)[<\/span>3]<\/span><\/sup>\u200b<\/td>\n<\/tr>\n
Enthalpy of vaporisation<\/th>\n300 kJ\/mol<\/td>\n<\/tr>\n
Enthalpy of fusion<\/th>\n13.1 kJ\/mol<\/td>\n<\/tr>\n
Various<\/th>\n<\/tr>\n
Crystalline structure<\/th>\nFace-centred cubic<\/td>\n<\/tr>\n
CAS NO<\/th>\n7440-50-8<\/td>\n<\/tr>\n
EINECS NO<\/th>\n231-159-6<\/td>\n<\/tr>\n
Specific heat<\/th>\n385 J\/(K-kg)<\/td>\n<\/tr>\n
Electrical conductivity<\/th>\n58,108 \u00d7 106<\/sup>\u00a0S\/m<\/td>\n<\/tr>\n
Thermal conductivity<\/th>\n400 W\/(K-m)<\/td>\n<\/tr>\n
Speed of sound<\/th>\n3570 m\/s at 293.15 K (20 \u00b0C)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

USES OF COPPER<\/h2>\n

Copper is one of the most widely used metals. Here are some of the applications of copper.<\/p>\n