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Showing posts from October 11, 2010

CBSE Science Class IX Chemistry | Structure of the Atom | NCERT Solutions of Chapter 4 Intext Questions

Chapter 4, Structure of the Atom   CBSE Board Class 9, NCERT Science (Chemistry) Solutions of Chapter Intext Questions    Q.1: What are canal rays? Q.2: If an atom contains one electron and one proton, will it carry any charge or not? Q.3: On the basis of Thomson’s model of an atom, explain how the atom is neutral as a whole. Q.4: On the basis of Rutherford’s model of an atom,

Structure of the Atom | Chapter 4, CBSE Class 9 Science (Chemistry) NCERT Solutions of Textbook Exercise

Structure of the Atom   Class IX, Chapter 4, NCERT (CBSE) Science (Chemistry) Solutions of CBSE - NCERT Science Textbook Chapter Exercise Questions Q.1: Compare the properties of electrons, protons and neutrons.   Solution: Particle Nature of charge Mass Location Electron Negative (–1) or (–1.6 x 10–19 C) 9 x 10–31 kg Extra nuclear part