What is Atomic Structure? Explain Dual Character of electron,

introduction

The present chapter  does not provide much of a history perspective of how the internal structure of the atom was discovered, rather it deal with the dominant wave charcter of electrons, their movment inside an atom, how to write electronic configuration, what are the rules required for writing configuration and the maximum probability zones of finding electrons also referred a orbital etc.

However, it is releant to mention that all atoms are made from three subatomic particle protons, Neutron and electrons. The important poit to keep in mand are as follows;

·       protons and Neutrons have almost the same mass, while the electrons is approximately 2000 times lighter.

·       Protons and Electrons carry chares of equal magnitude, But opposite charge. Neutrons carry no charge (they are neutral).

Particle	Charge	Mass	Mass(amu)
Proton	+1	1.6727*10-24	1.007316
Neutron	0	1.6750*10-24	1.008701
Electron	-1	9.110*10-24	0.0005490

Dual Character of Electron

Einstein suggested dual character of light wave as well particle. The phenomenon of diffraction and interference only could be explained by taking light as waves and phenomenon like black body radiation and photoelectric effect could be explained only on the basic of its particle nature. De-Broglie proposed that matter can also have a dual character i.e, wave and particle . He derived and expression for calculating the wavelength λ of a particle of mass m moving with velocity v.