Copper (Cu): It is an important and useful metal. It belongs to group I-B which consists of copper, silver and gold. These three metals are called coinage metal as in past they were used to make currency coins. Copper objects are found among the remains of many ancient civilizations including Egypt, Asia Minor, China, Southern …
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Manganese (Mn) : Manganese was discovered in 1774 by Swedish chemist John Gottlieb Gahn. Its name is derived from Latin word magnes meaning magnet. Its principle ore pyrolusite is paramagnetic. Occurrence: It is 12th most abundant element on earth crust. Its important minerals and ores are pyrolusite (principal ore) while other ores are rhodochrosite, franklinite …
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Iron: It is an important and useful metal. It was known to ancient Egyptians since 4000 BC. But its extraction started since 2000 BC. In India its extraction started since 600 BC. It belongs to group VIII-B of periodic table. Occurrence: After Aluminum it is most abundant metal on the earth crust. It is fourth …
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Chromium: French chemist Louis Nicolas Vauquelin discovered Chromium in 1797 . It is given the name as chromium which is from Greek word chroma meaning colour. This name is due to its coloured compounds. Occurrence: Chromium is a shiny metal. It is 21st most abundant element on earth crust. Its important minerals are Chromite or …
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Chemistry of Some Important Transition Metals Vanadium: It was discovered in 1801 in Mexico by Anders Manuel del Rio but was considered as form of chromium. Later it was rediscovered in 1830 by Swedish chemist Nils Gabriel Sefströrm. Interesting facts about vanadium: The element was named after Vanadis, goddess of beauty and love in Scandinavian …
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What are Coordination Compounds? The compounds in which ligands (electron pair donating species) are attached to transition metal through coordinate covalent bonds are called coordination compounds or complexes. Complex formation: Transition elements have great tendency to form coordination compounds or complexes. A compound which has one or more coordinate covalent bonds is called coordination compound …
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Transition Elements: The elements of “d” or “f” block which form one or more stable ions with partially filled d or f orbitals are called transition elements. As they have properties between s-block and p-block so they are called transition elements. They are divided into two categories: a) Main transition elements or outer transition metals: …
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