Question

Solve this:
Q6. Write the main postulates of Bohr's model of an atom.

Answer 1

Dear Student,
The main postulates of Bohr's model of an atom are :
1. The electrons revolve around the nucleus in fixed circular orbits called as stationary energy levels the energy levels corresponding to n=1,2,,3 4, --- are lebelled as K.L.M.N--
2 The movement of electron is possible only in shells in which .The angular momentum of each orbit is an integral multiple of h/2$\pi$
3.The orbits which are near to the nucleus have low energy while the energy of orbits increases as we move farther away from the nucleus. The electron in the first energy level is called as ground state and electron can move from a lower level to a higher level by absorption of energy while the electron from higher energy level jumps to lower level it emits energy.

energy of electron in an orbit can be calculated as

$E_n=-\frac{2.18\times {10}^{-18}}{n^2}J$ where 'n' =1,2,3
Regards!