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Structure of atom is the 2nd chapter that talks about the atom and its related topic, so let’s have a look at the subtopic to understand the concept in brief- Sub-atomic Particles Discovery Of Electron Charge To Mass Ratio Of Electron Charge On The Electron Discovery Of Protons And Neutrons Atomic Models Thomson Model Of Atom. ZLibrary Home. ) 2 c. Answer: J. Chapter 2: Structure of Atom Class 11 MCQ Questions. Richard Phillips Feynman (May 11, 1918 - February 15, 1988) was an American physicist. Install Now. This is a set of class notes for a first-year high school chemistry course. The charge to mass ratio of α – particles is approximately the charge to mass ratio of protons (a) Twice (b) Half. The chemistry of oxidation-reduction reactions is not limited to atoms of an element changing to ions or the reverse. Read and download NCERT Class 11 Chemistry Structure of Atom chapter in NCERT book for Class 11 Chemistry. 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