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 - Dr.Sanjaykumar Pawar   Class 11 Chemistry Chapter 2 – Structure of Atom: Complete NCERT Solutions Welcome to the complete NCERT solutions for Class 11 Chemistry Chapter 2, Structure of Atom . This chapter explains the fundamental structure of atoms and introduces important concepts such as atomic models, electromagnetic radiation, the photoelectric effect, Bohr's atomic theory, quantum numbers, electronic configuration, de Broglie waves and Heisenberg's uncertainty principle. This comprehensive solution guide provides step-by-step answers to the chapter exercises, with important formulas, scientific explanations, numerical calculations and appropriate SI units. These solutions are designed to help CBSE Class 11 students understand the concepts, prepare for school examinations and strengthen their foundation for competitive examinations such as NEET. Chapter 2: Structure of Atom  Complete step-by-step NCERT solutions for Class 11 Chemistry Chapter 2 – Str...

 -Dr.Sanjaykumar Pawar  CBSE Class 11 Chemistry – Chapter 1  Complete NCERT Class 11 Chemistry Chapter 1 exercise solutions , covering significant figures, limiting reagents, stoichiometry, mole concept and chemical calculations. Some Basic Concepts of Chemistry NCERT Exercise Questions and Solutions (1.1–1.19) Answer Writing Format: All solutions are presented in a systematic CBSE Board examination format, including formulas, substitutions, calculations and final answers with appropriate units. Question 1.1 – Calculate the Molar Mass Calculate the molar mass of the following: (i) H 2 O (ii) CO 2 (iii) CH 4 Solution: (i) Water (H 2 O) Atomic masses: H = 1.008 g mol -1 O = 16.00 g mol -1 Molar mass of H₂O = 2(1.008) + 16.00 = 18.016 g mol⁻¹ (ii) Carbon dioxide (CO 2 ) Molar mass of CO₂ = 12.01 + 2(16.00) = 44.01 g mol⁻¹ (iii) Methane (CH 4 ) Molar mass of CH₄ = 12.01 + 4(1.008) = 16.042 g mol⁻¹ Final Answers: (i) H₂O = 18.016 g...