The presence of electrons outside the nucleus and nucleus at the centre of the atom was suggested by:

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

The presence of protons and neutrons at the centre of the atom was suggested by:

The number of electrons in an element X is 15 and the number of neutrons is 16. Which of the following is the correct representation of the element?

Dalton’s atomic theory successfully explained:

(i) Law of conservation of mass

(ii) Law of constant composition

(iii) Law of radioactivity

(iv) Law of multiple proportion