Photo: Niels Bohr's research notes for his new atomic theory Rutherford's find came from a very strange experience. Everyone at that time imagined the atom as a "plum pudding." That is, it was roughly ...

The Bohr model, introduced by Danish physicist Niels Bohr in 1913, was a key step on the journey to understand atoms. Ancient Greek thinkers already believed that matter was composed of tiny basic ...

This article presents the CBSE Class 9 Science notes on chapter 4 ‘Structure of the Atom’. These chapter notes are prepared by the subject experts and cover every important topic from the chapter. In ...

Get NCERT Class 9 Science Chapter 4 Structure of the Atom in PDF from this article. We have provided here the latest edition of the chapter for the current academic year. Students must read this ...