Class 11 Chemistry NCERT Solutions Chapter 4: Chemical Bonding and Molecular Structure Question 1. Explain the formation of chemical bond. Answer: Inert gases or noble gas elements are present in group 18 also called zero group. This means that their valency is zero or their atoms can exist independently of their own. Let us […]
Class 11 Chemistry NCERT Solutions Chapter 1: Some Basic Concepts of Chemistry Question 1. Calculate the molecular mass of the following : (i) H2O (ii) CO2 (iii) CH4 Answer: (i) Molecular mass of H2O : 2 × 1 + 1 × 16 = 18u (ii) Molecular mass of CO2 : 1 × 12 + 2× 16 = 44
Introduction: What is Atomic Mass? Atomic mass is one of the most fundamental concepts in chemistry, yet many students and professionals need clarification. Simply put, the atomic mass of an element represents the average mass of its atoms, typically measured in atomic mass units (amu) or Daltons (Da). This comprehensive guide will cover: ✔ What atomic mass really means ✔
Class 11 Chemistry NCERT Solutions Chapter 3: Classification of Elements and Periodicity in Properties Question 1. What is the basic theme of organisation in the periodic table? Answer:Â The basic theme of organisation of elements in the periodic table is to simplify and systematize the study of the properties of all the elements and
Class 11 Chemistry NCERT Solutions 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 g 9.1 × 10-28 g is the mass of = 1 electron
