Chapter 10 The s-Block Elements Question 1. What are the common physical and chemical features of alkali metals ? Answer: Property Li Na K Rb Cs Fr Atomic number 3 11 19 37 55 87 Atomic mass (g mol-1) 6-94 22-99 39-10 85-47 132-91 (223) Atomic (Metallic) radius (pm)...
Chapter 9 Hydrogen Question 1. Justify the position of hydrogen in the periodic table on the basis of its electronic configuration. Answer:Position of Hydrogen in the Periodic Table In the periodic table, hydrogen has been placed at the top of the alkali metals in...
Chapter 8 Redox Reactions Question 1. Assign oxidation numbers to the underlined elements in each of the following species ; (a) NaH2PO4 (b) NaHSO4 (c) H4P2O7 (d) K2MnO4 (e) CaO2 (f) NaBH4 (g) H2S2O7 (h) KAl(SO4)2.12H2O Answer: Question 2. What are the oxidation...
Chapter 7 Equilibrium Question 1. A liquid is in equilibrium with its vapours in a sealed container at a fixed temperature. The volume of the container is suddenly increased, (i) What is the initial effect of the change on the vapour pressure ? (ii) How do the rates...
Chapter 6 Thermodynamics Question 1. Choose the correct answer. A thermodynamic state function is a quantity (i) used to determine heat changes (ii) whose value is independent of path (iii) used to determine pressure volume work (iv) whose value depends on temperature...
