9.1 Need for Arrangement of Elements in an Organized Manner 9.1 Need for Arrangement of Elements in an Organized Manner 9.1.1 Historical background of Classification of Elements 9.2. Doberieners Triads 9.3 Newland’s Law of Octaves 9.4 Mendeleev’s Periodic Table 9.5 Modern Periodic Table. 9.5.1 Position of Elements in Modern Periodic Table 9.5.2 Trends in Modern Periodic Table
1 - Heat 2 – Chemical Equations & Reactions 3 - Reflection of Light 4 - Acids, Bases and Salts 5 - Refraction of light at Plane Surface 6 - Refraction of Light at Curved Surface 7 - Human Eye and Colorful World 8 - Structure of Atom 9 - Classification of Elements 10 - Chemical Bonding 11 - Electricity I2 - Magnetic Effects of Electric Current 13 - Metallurgy 14 - Carbon and Its Compounds