NCERT Solutions for Class 11 Chemistry Chapter 2 Structure of Atom
NCERT Solutions for Class 11 Chemistry Chapter 2 Structure of Atom Topics and Subtopics in NCERT Solutions for Class 11 Chemistry Chapter 2 Structure of Atom : Section Name Topic Name 2 Structure of Atom 2.1 Discovery of Sub-atomic Particles 2.2 Atomic Models 2.3 Developments Leading to the Bohr’s Model of Atom 2.4 Bohr’s Model for Hydrogen Atom 2.5 Towards Quantum Mechanical Model of the Atom 2.6 Quantum Mechanical Model 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 g 9.1 × 10 -28 g is the mass of = 1 electron (ii) One mole of electrons = 6.022 × 10 23 electrons Mass of 1 electron = 9.1 × 10 -31 kg Mass of 6.022 × 10 23 electrons = (9.1 × 10.31kg) × (6.022 × 10 23 ) = 5.48 × 10 -7 kg Charge on one electron = 1.602 × 10 -19 coulomb Charge on one mole electrons = 1.602 × 10 -19 × 6.022 × 10 23 = 9.65 × 10 4 coulombs Quest...