electronic reviews---Electronic profile
Electrons are negatively charged subatomic particles. It can be free (not belonging to any atom), and it can be bound by the atomic nucleus. The electrons in the atoms are present in a spherical shell with a wide variety of radii and energy levels. The larger the spherical shell, the higher the energy contained in the electron.
The electron belongs to subatomic particles in the lepton class. Lepton is considered to be one of the basic particle of matter, which cannot be decomposed into smaller particles. It is with the 1/2 spin, and a fermion (according to Fermi Dirac statistics). Electron charge for e=1.6 x 10 as Coulomb, quality 9.11 x 10 University as a kg 0.51MeV/c L, the energy of 511 x 10 EV, usually is said to e. The electron's anti particle is a positron, with the same mass, energy, spin, and the same amount of positive charge (+1), a negative electron charge of -1.
electronic reviews---Research history
In 1897, Joseph John Thomson Cavendish's lab found the electrons when they studied the cathode rays. Joseph John Thomson put forward the model of raisins (date model).University of Cambridge researchers and colleagues in the University of Birmingham completed a study. The communique said, the electronic is usually considered as an. Researchers at the University of Cambridge very fine "quantum wire placed in a metal plate above, during which the distance control for about 30 atoms width, and they placed about minus 273 degrees of ultra low temperature environment under, and then change the magnetic field, found on the metal plate of the electronic via quantum tunneling effect of jumping to wire split into the spinon and Anako.In order to solve this problem, in 1980, the American physicist Laughlin Robert proposed a new theory to solve this problem, which also explained the complex interaction between electrons. The theory is, however, that it is a "price" for the physics community: the singularity of the theory derived from the show that the current is actually made up of 1/3 electronic charge.
electronic reviews---Arrangement of law
1, the electron is in the nucleus, according to energy from low to high, from the near to the distant in different electronic layer hierarchical arrangement.
2, each layer holds a maximum of electron number is 2n (n - a representative of electronic level).
3, the most outer electron number is not more than 8 (the first layer is not more than 2), the outer layer is not more than 18, the third layer is not more than 32.
4, electronic always give first priority to row in the lowest energy electronic layer, that is, the first row of the first layer. When the first row is full, and then waiting for the second layer, the second layer lined, row the third layer.