Using Bohr's postulates of the atomic model. Derive the expression for radius of nth electron orbit, thus obtaining the expression for Bohr's radius.

Using Rautherfold model of the atom, derive the expression for the total electron in hydrogen atom. What is the significance of total negative energy possedssed by the electron? Using Bohr's postulates of the atomic model, derive the expression for radius of n^(th) electron orbit. Hence obtain the expression for Bohr's radius This therory developed is applicable to Hydrogen atoms and ions having just one electron. Let us assume that the nucleus has a positive charge Ze (i.e. ther are Z protons in it) and electrons moves with a consant speed V along a circle of radius r with the centre at nucleus By Coulomb's law

The expression for Bohr radius of nth orbit of an atoms is

Bohr's Model(postulates)

Derive an expression for the radius of n^(th) Bohr’s orbit in Hydrogen atom.