how electrons are conducted by copper?

Question

what is the reason copper conducts electron?

Answer 1

There is a "conduction band", which means the atoms do not hold on to a particular electron very tight. It is easy for an electron to jump from one copper atom to another

Answer 2

Diffraction.

Electrons behave as waves. Copper has a lattice. If the electron has the right wavelength it can "diffract" in certain direction through the copper without interacting with nuclei (which would stop it in its tracks). This diffraction behaviour gives conducting electrons a special relationship between their energy and momentum (normally energy is proportional to momentum squared, but in a solid diffraction it is not). This relationship when plotted is called the band structure of the material. Quantum effects coupled with this structure then determine whether electrons are available to conduct - and for copper they are.

Answer 3

Well, all metals have electrons, protons and neutrons.
It's on the periodic table.
According the the periodic table, copper (Cu) has 29 electrons.

http://www.physics.ohio-state.edu/~lvw/physics/bigpertable.jpg