Question

Explain Bohr's model of an atom.

Answer 1

Neils Bohr gave atomic model in 1913.The main points of this model are:

1) An atom consists of a central positive part called the nucleus which contains all the protons and neutrons.

2) Electrons which are present outside the nucleus revolve around the nucleus in definite circular paths called orbits or shells.

3) Each orbit has a fixed energy and the orbitals are represented by the symbols K, L,M, N etc or by the numbers 1,2,3 …

4) Each orbit can accommodate not more than a fixed number of electrons.

5) Electrons moving in the same orbit donot lose or gain energy.

6) Electrons lose energy on jumping from a higher orbit to lower one and vice-versa.

Answer 2

Step-by-step explanation:

BOHR ATOMIC MODEL POINT :

1 Electron has a centre called Nucleus

2 Electron revolve only in fixed circular orbit with fixed energy and fixed velocity .

This is based on Quantization Condition.

3 While revolving the electrostatic force of attraction on between electron and nucleus provide centripetal force.

4 While revolving in particular orbit an electron nither loose energy nor gain energy .

Because energy of an orbit / shell is fixed .

5 Electron can accept energy and loose energy .

This based on two condition :

i If an electron accept an energy it jump to higher energy level means excitation of electron .

ii If an electron loose energy it return back to lower energy level means de excitation of electron.

Thank you