Chapter 4: Structure of Atom
NCERT Solutions for Class 9 Science Chapter 4 Structure of Atom NCERT Textbook for Class 9 Science – Page 47Question 1. What are canal rays?Answer: Canal rays are positively charged radiations which led to the discovery of positively…
Question and Answers, Science Class 9 NCERT
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Chapter 2: Structure of Atom
Question 1.(i) Calculate the number of electrons which will together weigh one gram.(ii) Calculate the mass and charge of one mole of electrons.Answer:(i) Mass of an electron = 9.1 × 10-28 g9.1 × 10-28 g is the mass of =…
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