Rutherford and Bohr describe atomic structure 1913. Photo: Niels Bohr's research notes for his new atomic theory. In 1911, Niels Bohr earned his PhD in Denmark with a dissertation on the electron ...

Get CBSE Class 9 Science chapter 4, Structure of Atom: Important topics and questions to prepare for class 9 Science Exam 2017-2018. JAC 12th Arts Result 2025 declared Check Results ...