Бакар

29
Cu
Група
11
Периода
4
блок
d
Protons
Electrons
Neutrons
29
29
35
Општи Својства
Атомски број
29
Атомска тежина
63,546
Mass Number
64
Category
Преоден метал
Color
Copper
Radioactive
Не
From the Latin word cuprum, from the island of Cyprus
Кристална структура
Face Centered Cubic
History
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.
Electrons per shell
2, 8, 18, 1
Електронска конфигурација
[Ar] 3d10 4s1
Cu
Pure copper is orange-red and acquires a reddish tarnish when exposed to air
Физички Својства
Фаза
Solid
Густина
8,96 g/cm3
Точка на топење
1357,75 K | 1084,6 °C | 1984,28 °F
Точка на вриење
2835,15 K | 2562 °C | 4643,6 °F
Топлина на топење
13,1 kJ/mol
Топлина на испарување
300 kJ/mol
Specific Heat Capacity
0,385 J/g·K
Abundance in Earth's crust
0,0068%
Abundance in Universe
6×10-6%
Macro
Кредити на слика: Wikimedia Commons (Jonathan Zander)
Macro of native copper
CAS Number
7440-50-8
PubChem CID Number
23978
Атомски Својства
Атомски полупречник
128 pm
Ковалентен полупречник
132 pm
Електронегативност
1,9 (Полингова скала)
Ionization Potential
7,7264 eV
Atomic Volume
7,1 cm3/mol
Thermal Conductivity
4,01 W/cm·K
Oxidation States
1, 2, 3, 4
Applications
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.
Cooking acidic food in copper pots can cause toxicity
Isotopes
Stable Isotopes
63Cu, 65Cu
Unstable Isotopes
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