The Struccture Of Atom

The Struccture Of Atom

Class no:01.

Date:20-09-2013.

Atomic Struccture:  Matter has mass and takes up space. Atoms are basic building blocks of matter, and cannot be chemically subdivided by ordinary means.

Example: S,H,O,N etc.

There are 90 naturally accuring atom is the World.25 atom exiest(man maded).

Atoms are composed of three type of particles: protons, neutrons, and electron.

            Electron= -ve charge

            Protons = + ve charge

            Neutrons= (0)neutral

Both the protons and neutrons reside in the nucleus. Protons have a postive (+) charge, neutrons have no charge --they are neutral. Electrons reside in orbitals around the nucleus. They have a negative charge (-).

The Struccture Of Atom