Particle function, Physics

Particle function:

Protons

The number of protons in an atom determines the kind of material:

Eg.

Hydrogen 1 proton

Helium 2 protons
Lithium 3 protons
Beryllium 4 protons

etc Copper 29 protons

etc Uranium 92 protons

The number of protons is referred to a the atomic number, thus the atomic number of copper is 29.

Neutrons

The neutron simply adds to the weight of the nucleus and hence the atom. There is no simple rule for determining the number of neutrons in any atom. In fact atoms of the same kind can contain different numbers of neutrons. For example chlorine may contain 18 - 20 neutrons in its nucleus.

The atoms are chemically indistinguishable and are called isotopes. The weight of an atom is due to the protons and neutrons (the electrons are negligible in weight), thus the atomic weight is virtually equal to the sum of the protons and the neutrons.

Electrons

The electron orbits define the size or volume occupied by the atom. The electrons travel in orbits which are many times the diameter of the nucleus and hence the space occupied by an atom is virtually empty! The electrical properties of the atom are determined by how tightly the electrons are bound by electrical attraction to the nucleus.

IONS

A neutral atom contains an equal number of positive charges (protons) and negative charges (electrons). It is possible for an atom to gain or loose an electron.

An atom (or possibly a group of atoms) which loses an electron has lost one of its negative charges and is therefore left with an excess of one positive charge; it is called a positive ion. An atom that gains an electron has an excess of negative charge and is called a negative ion.

 

Posted Date: 9/13/2012 1:18:16 AM | Location : United States







Related Discussions:- Particle function, Assignment Help, Ask Question on Particle function, Get Answer, Expert's Help, Particle function Discussions

Write discussion on Particle function
Your posts are moderated
Related Questions
An electrical dipole is just a separation between a negative and positive charge of the same magnitude. Consider that a dielectric material is exposed to an electrical field. The e

SECOND DEFINITION OF IMPULSE: It can be described as, "The change in momentum produced by the force of impulse".


Q. Illustrate what are the three particles that make up an atom? Answer:- Atoms are conjured of neutrons, protons, and electrons. The protons as well as neutrons are found

A rectangular surface (0.14 m x 0.39 m) is oriented in a uniform electric field of 440 N/C. What is the maximum possible electric flux through the surface?

how to make a ray diagram ?? and what are f, p ?? and what is refraction index?????

What occures to the normal shift when the thickness of the optical medium is decreased? Write down the expression for equivalent focal length of combination of two thin lenses d

how to solve kinematic problems?

please discuss problem related to clamper.

Engineers and technologist engage themselves in the design and manufacturing of machine like latches, engines, motors, generators, bulldozers etc. And in the fabrication of vehicle