It is wise to plan your answer first by making some notes. This will help you to include ... In your answer, use ideas about electronic structure to explain differences in chemical properties.

This article presents the CBSE Class 9 Science notes on chapter 4 ‘Structure of the Atom ... and get a hold on the subject. Dalton’s atomic theory in suggested that an atom was indivisible.

It is wise to plan your answer first by making some notes. This will help you to include all the key points. Six-mark questions may be synoptic questions, which bring together ideas from two or ...