Write the names and symbols of two most reactive metals. In other words, ionization energy is the measurement of strength by which an electron is bounded or it is the measurement of the difficulty of removing the electron. 1. Onthecontrary,alltheolder chemistrybooksandtheones ofrecent editionwhichI ... call metals electron donors and non-metals electron acceptors? Describe the extraction of metal from the sulphide ore of zinc by giving chemical equation. Why? Therefore, the nature of bond in the compound XY is ionic. Non metallic character trend in periodic table is exactly opposite to the metallic character trend. This shows the copper is more reactive than silver. Main Ores of Copper In nature, metal A is found in a free state while metal B is found in the form of its compounds. Question 27. So, for obtaining such metals from their compounds, their sulphides and carbonates (in which they are present in nature) are first converted into their oxides by the process of roasting and calcination respectively. Hence, when a solution of CuSo4 is kept in an iron pot, iron slowly displaces copper from the solution and blue colour of the solution keeps fading away. Fe, Zn, Na, Cu, Ag This is an example of a general pattern of chemical reactions in which metals react with nonmetals. An ore gives carbon dioxide on treatment with a dilute acid. On the other hand, sodium metal reacts with water violently and in this case a lot of heat is evolved which is sufficient for hydrogen to catch fire. What about the size of atoms as we move down the group (from top to bottom)? This confirms that the gas is H2. That is why metals displace hydrogen from dilute acids. Answer: Question 37. If a pice of silver is immersed in a solution of copper sulphate, no reaction will take place because silver is less reactive than copper and will not displace copper from the copper sulphate solution. Why are food cans tin-plated instead of zinc plated though zinc is cheaper than tin ? Explain reason and also write chemical reactions. Na > Zn > Fe > Cu > Ag. is moderately reactive. You can also remember the non metallic character from the equation below. Metals are electron donors (metals loses/donates electrons) Now see, metals have a tendency to lose electrons. He made the same observations when this element was treated with hydrochloric acid. Answer: electron acceptor (Cl) meets electron donor (Na) electron jumps from Na to Cl to form. Thus, it is considered an amphoteric oxide. Question 21. An element A burns with golden flame in air. It is cheap, easily available, malleable and ductile. Give one example of each type. Thus down the group (from top to bottom), the Metallic character increases. 6(O)2- – 3O2 + 12e–. A solution of the metal salt is made as an electrolyte. Answer: Cl + e– → Cl– (iv) Electrolytic refining of Blister copper is done to obtain pure copper. Answer: Explain. (ii) How can the metal be obtained from its carbonate ore ? | Definition, Units, Types – Thermometry and Calorimetry, 10 Lines about Myself for Students and Children in English, MCQ Questions with Answers for Class 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, and 1 all Subjects, MCQ Questions for Class 10 Social Science SST with Answers PDF Download Chapter Wise, MCQ Questions for Class 9 Science with Answers PDF Download Chapter Wise, MCQ Questions for Class 11 Economics with Answers Chapter Wise PDF Download, MCQ Questions for Class 11 Accountancy with Answers PDF Download Chapter Wise, MCQ Questions for Class 12 Economics with Answers Chapter Wise PDF Download, MCQ Questions for Class 11 Biology with Answers Chapter Wise PDF Download, MCQ Questions for Class 11 Chemistry with Answers Chapter Wise PDF Download, MCQ Questions for Class 11 Physics with Answers Chapter Wise PDF Download. 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