Cupru
29
Cu
Grupă
11
Perioadă
4
Bloc
d
Protoni
Electroni
Neutroni
29
29
35
Proprietăți Generale
Număr atomic
29
Masă atomică
63,546
Numar de masa
64
Categorie
Metale de tranziție
Culoare
Cupru
Radioactive
Nu
Din cuvântul latin cuprum, de la insula Ciprului
Structură cristalină
Față Centrată Cubic
Istoric
Copper occurs naturally as native copper and was known to some of the oldest civilizations on record.
Earliest estimates of the discovery of copper suggest around 9000 BC in the Middle East.
It was one of the most important materials to humans throughout the copper and bronze ages.
Earliest estimates of the discovery of copper suggest around 9000 BC in the Middle East.
It was one of the most important materials to humans throughout the copper and bronze ages.
Electroni pe nivelul de energie
2, 8, 18, 1
Configurație electronică
[Ar] 3d10 4s1
Pure copper is orange-red and acquires a reddish tarnish when exposed to air
Proprietăți Fizice
Fază
Solid
Densitate
8,96 g/cm3
Punct de topire
1357,75 K | 1084,6 °C | 1984,28 °F
Punct de fierbere
2835,15 K | 2562 °C | 4643,6 °F
Energie de fuziune
13,1 kJ/mol
Energie de evaporare
300 kJ/mol
Căldură specifică
0,385 J/g·K
Abundența în scoarța Pământului
0,0068%
Abundența în Univers
6×10-6%
Numarul CAS
7440-50-8
Număr CID PubChem
23978
Proprietăți Atomice
Rază atomică
128 pm
Rază de covalență
132 pm
Electronegativitate
1,9 (Scara lui Pauling)
Potențial de ionizare
7,7264 eV
Volum molar
7,1 cm3/mol
Conductivitate termică
4,01 W/cm·K
Număr de oxidare
1, 2, 3, 4
Aplicații
Copper is often used for electrical wiring applications and for household plumbing applications.
Copper sulfate is used as a fungicide and as an algicide in rivers, lakes and ponds.
It is also used in cookware and cooking utensils.
Commercially important alloys such as brass and bronze are made with copper and other metals.
Copper sulfate is used as a fungicide and as an algicide in rivers, lakes and ponds.
It is also used in cookware and cooking utensils.
Commercially important alloys such as brass and bronze are made with copper and other metals.
Cooking acidic food in copper pots can cause toxicity
Izotopi
Izotopi stabili
63Cu, 65CuIzotopi instabili
52Cu, 53Cu, 54Cu, 55Cu, 56Cu, 57Cu, 58Cu, 59Cu, 60Cu, 61Cu, 62Cu, 64Cu, 66Cu, 67Cu, 68Cu, 69Cu, 70Cu, 71Cu, 72Cu, 73Cu, 74Cu, 75Cu, 76Cu, 77Cu, 78Cu, 79Cu, 80Cu