Chemical Properties of Group 15 Elements – The p-Block Elements – Class 12 Chemical Properties of Group 15 Elements Nitrogen differs from rest of members of the group due to its (1) smaller size, (2) high electronegativity, (3) high ionisation enthalpy and (iv) non-availability of d-orbitals in the valence shell. Nitrogen has unique tendency to form pπ-pπ … [Read more...] about Chemical Properties of Group 15 Elements
Class 12
Characteristics and Physical Properties of Group 15 Elements
Representative Elements or the Main Group Elements In the long form of the periodic table, the elements have been classified into four blocks : s, p, d and f depending upon the subshell in which the last electron enters. The elements belonging to s and p-blocks in the periodic table are called representative elements or the main group elements. They belong to groups 1, 2 … [Read more...] about Characteristics and Physical Properties of Group 15 Elements
Uses of Aluminium, Copper, Zinc and Iron
Uses of Aluminium (i) Aluminium is used for making electrical transmission cables as it is a good conductor of electricity. (ii) Aluminium powder is used as a reducing agent in thermite welding. (iii) In the form of finely divided powder, it is used in anti-rust paints and lacquers. (iv) Aluminium foils are used up for wrapping cigarettes, food stuffs, chocolates, … [Read more...] about Uses of Aluminium, Copper, Zinc and Iron
Extraction of Copper and Zinc
Occurrence and Extraction of Copper Occurrence of Copper It occurs as native copper as well as in combined state.The main ores of copper are: (i) Copper glance Cu2S (ii) Copper pyrites CuFeS2 (iii) Malachite Cu(OH)2CuCO3 (iv) Cuprite or (Rubby copper) Cu2O (v) Azurite 2CuCO3.Cu(OH)2 Extraction of Copper It is mainly extracted from copper pyrites (CuFeS2). The … [Read more...] about Extraction of Copper and Zinc
Extraction of Iron
Occurrence and Principle of Extraction of Iron Iron is the second most abundant metal occurring in the earth's crust. It is a reactive metal and does not occur in the free state. In combined state Occurs as oxides, carbonates and sulphides. The common ores of iron are (1) Haematite Fe2O3 (2) Magnetite Fe3O4 (3) Limonite Fe2O3.3H2O (4) Iron pyrites FeS2 (5) … [Read more...] about Extraction of Iron