Structure of Atoms

• Discovery of Electron
• Proton and neutron
• Atomic number
• Atomic structure
• Isotopes and isobars
• Thomsan model and limit ation
• Shells and subshell
• Dual nature of matter and light
• De broglie’s relation ship
• Heisenberg uncertailnly principal
• Concept of orbital
• Hund’s rule
• Go to index page

Atom

The smallest possible amount of matter which still retains its identity as a chemical element, consisting of a nucleus surrounded by electrons.

Atomic Particles

Atoms are made up of three particles called as protons, neutrons, and electrons. These particles are responsible for the mass and charge of any atoms.

The nucleus is the center of the atom contains the protons having (+) charge and the neutrons have no charge.

The outermost regions of the atom are called electron shells and contain the electrons having (-) charge.

Atoms have different properties based on the arrangement and number of their basic particles.

Proton: Positively charged subatomic particle forming part of the nucleus of an atom and determining the atomic number of an element.

Neutron: A subatomic particle forming part of the nucleus of an atom. It has no charge. It is equal in mass to a proton.

In May 1932 James Chadwick announced that the core also contained a new uncharged particle which he named as neutron

Atomic structure details

Related topic : Discovery of Electron , Proton and neutron and Atomic number

Formulas : Structure of atom and Basic concept of chemistry