Question

Atomic models have been improved over the years. Arrange the following atomic models in the order of their chronological order *
1 point
(i) Rutherford’s atomic model (ii) Thomson’s atomic model (iii) Bohr’s atomic model
(ii) Thomson’s atomic model (iii) Bohr’s atomic model (i) Rutherford’s atomic model
(ii) Thomson’s atomic model (i) Rutherford’s atomic model (iii) Bohr’s atomic model
(iii) Bohr’s atomic model

(ii) Thomson’s atomic model (i) Rutherford’s atomic model​

Answer 1

ii) Thomson’s atomic model (i) Rutherford’s atomic model (iii) Bohr’s atomic model

(iii) Bohr’s atomic model

Answer 2

• The first atomic model was given by J.J. Thomson in 1904. He compared an atom with a watermelon in which seeds are embedded like electrons in the atom.
• A further model of the atom was proposed by Rutherford in 1911. He explained that the electrons revolve around the nucleus.
• The final atomic model with improvement came in 1915 by Bohr.
• The chronological order of the atomic models is (ii) Thomson’s atomic model (i) Rutherford’s atomic model (iii) Bohr’s atomic model.