WebStructure of Atom – Notes. Matter is made up of atoms that further consist of sub-atomic particles. Sub-atomic particles are electrons, protons, and neutrons. Protons are positively charged, electrons are negatively charged and neutrons are neutral. Protons and neutrons have mass equivalent to a Hydrogen atom whereas electrons has a ... WebSTRUCTURE OF ATOM • Atom is the smallest indivisible particle of the matter. Atom is made of electron, ... Mass 9.11 x 10 -31kg 1.672614 x 10 -27kg 1.67492 x10 -27kg Electrons were discovered using cathode ray discharge tube experiment. Nucleus was discovered by Rutherford in 1911. ... Notes for Class 6 to 12 Please Visit www.ncerthelp.com ...

Structure of Atom - Flashcards for NEET Chemistry - BYJU

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What is an atom ? NRC.gov

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