Q. 184.7( 3 Votes )

Atomic models have been improved over the years. Arrange the following atomic models in the order of their chronological order

(i) Rutherford’s atomic model

(ii) Thomson’s atomic model

(iii) Bohr’s atomic model
A. (i), (ii) and (iii)

B. (ii), (iii) and (i)

C. (ii), (i) and (iii)

D. (iii), (ii) and (i)

Answer :

J.J. Thomson identified in his experiment that the atom was not a simple, indivisible particle but contained at least one subatomic particle called electron. Rutherford put forward the model of an atom which had a positively charged centre called nucleus. It also had the electrons which revolved around the nucleus in well-defined orbits. According to Bohr’s model of an atom, only certain or special orbits of electrons were allowed in an atom. During revolving around these orbits, the electrons do not radiate energy.

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