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ICSE Class 8 Chemistry Question 9 of 23

Atomic Structure — Question 13

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Question

Question 8

(a) What are the two main features of Rutherford's atomic model?

(b) State its one drawback.

Answer

(a) The two main features of Rutherford's atomic model are:

  1. An atom consists of mainly two parts : the centrally located nucleus and the outer circular orbits.
  2. The nucleus is positively charged mass and the entire mass of the atom is concentrated on it. The size of the nucleus is very small and it is the densest part of the atom. Electrons revolve around the nucleus in circular orbits called shells. An atom is electrically neutral i.e., number of protons is equal to number of electrons.

(b) Rutherford could not explain the structural stability of an atom.