Electron distribution, Physics

Assignment Help:

Electron distribution:

The atoms of a solid have electrons rotating in orbits around the positive nucleus. This is true of gases and liquids as well. These orbiting electrons exist in energy shells or levels.

The potential energy (energy of position) increases with distance out from the nucleus. The outermost occupied energy level is called the valence shell. This is a higher energy level than the energy levels of electrons in the other shells since the electrons are rotating further from the nucleus.

The electrons in the valence shell can most easily pass from one atom to another and thus constitute an electric current. Furthermore, the valence electrons are the ones that go into chemical reactions, or combinations, with other atoms.

When an outside influence such as an electric field or heat is applied, a valence electron may acquire sufficient energy to jump through a forbidden (energy) gap and on into the conductor band where it is free of any influence of the positive nucleus and becomes a carrier of electricity, ready to take the place of another electron that has just left its own atom, in the same manner.

769_Electron distribution.png


Related Discussions:- Electron distribution

What is the equilibrium temperature of the mixture, A 2.00 x 10 3 -g sample...

A 2.00 x 10 3 -g sample of water at 100.0°C is mixed with a 4.00 x 10 3 -g sample of water at 0.0°C in a calorimeter. What is the equilibrium temperature of the mixture?

Energy barrier, a beam of electron is incident on barrier 6eV high and 0.2 ...

a beam of electron is incident on barrier 6eV high and 0.2 nm wide. find the energy in eV these should have if 1% of them are to get through the barrier.

Explain isolation transformers, What is the difference among isolation tran...

What is the difference among isolation transformers and step up or step down transformer? Actually an isolation transformer may be physically the similar as a Step up/Step Down

., What is plane diffraction grating? How the wavelength of sodium light is...

What is plane diffraction grating? How the wavelength of sodium light is measured?question #Minimum 100 words accepted#

Draw a force diagram, The magnitude of a charge, q, is to be determined by ...

The magnitude of a charge, q, is to be determined by transferring the charge equally to two pith balls. Each of the pith balls has a mass of m, and is suspended by an insulating th

Transform kinetic energy into vertical potential energy, Transform kinetic ...

Transform kinetic energy into vertical potential energy A pole vaulter performs the extraordinary feat of converting his forward kinetic energy to vertical potential energy. Us

Optics, A spider is hanging by means of its own silk thread directly above ...

A spider is hanging by means of its own silk thread directly above a transparent fixed sphere of r = 20cm .... the refractive index of material of sphere is root(2).... and height

Explain photo diode, In these diodes electron and hole pairs are formed by ...

In these diodes electron and hole pairs are formed by junction photoelectric effect. That is the covalent bonds are broken by the EM radiations absorbed by the electron in the V.B.

Temperature, If the temperature in a room is 84 degrees at the floor what w...

If the temperature in a room is 84 degrees at the floor what will it be at a 30 foot ceiling

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd