NCERT Class 9 Science Solution, Notes, Atoms and molecules
Atoms and molecules 1. Laws of chemical combination 2. Postulates of Dalton’s atomic theory 3. Some Limitations of Dalton’s atomic theory
NCERT Class 9
NCERT Class 9 Science Lesson Structure of atom Solution and Notes
Structure of atom Ionisation of gases in the discharge tube proved that atoms have subatomic particlesSummary of characteristics of electrons, protons and neutrons Particle Electron Proton Neutron Symbol e p … Read more