CBSE Class 10 Science Important Questions Chapter 3 Metals and Non-Metals ... placed below hydrogen in the series, if will not evolve hydrogen 8. are moderately reactive. asked Oct 10, 2019 in Chemistry by Deepak01 ( … The organization of elements on the periodic table allows for predictions concerning reactivity. A list of metals arranged in the order of their decreasing reactivity (activity) is called reactivity series. Define activity series of metals. Reactivity Trend in the Periodic Table . It is easy to extract metal from their oxide, as compared to their sulphides and carbonates. Each element in the reactivity series can be replaced from a compound by any of the elements above it. ... Reactivity Series of Metals and Non-metals. So, reactivity series of metals can be defined as a series of metals, in order of reactivity from highest to lowest. Learn the reactivity series of metal through this simple yet effective mnemonic. Find out how metals like Na, Ca and Mg are extracted. Answer: Na Produced by the electrolysis of molten NaCl. Alloys. Question 77. For example, magnesium metal can displace zinc ions in a solution. Reduction: Heating of oxides of metals to turn them into metal is known as Reduction. They are found in the earth’s crust mainly as oxides, sulphides or carbonates. Mg(s) + Zn 2+ → → Zn(s) + Mg 2+ The interval between metals in the reactivity series of metals represents the reactivity of those metals towards each other. 3. These elements are located in the upper right and lower left corners of the periodic table and in certain element groups. Reactivity series is the series of metals based on their reactivity from highest to lowest. A more reactive metal will displace a less reactive metal from a compound. Extracting Metals in the Middle of the Activity Series. It is also known as activity series. (i) Extraction of Metals of Least Reactivity: Mercury and copper, which belong to the least reactivity series, are often found in the form of their sulphide ores. CBSE Class 10 - Ask The Expert. Arrange the metals gold, copper, iron and magnesium in order of their increase in reactivity. The reactivity series is a series of metal elements, and sometimes carbon and hydrogen, that is arranged according to their reactivity. The metals in the middle of the activity series (Zn, Fe, Pb, etc.) Copper glance (Cu 2 S) is the ore of copper. KCl is added to reduce the melting point of NaCl. A reactivity series is typically a vertically presented model with the most-reactive element placed at the top of the series and … Cinnabar (HgS) is the ore of mercury. The way, metals like sodium, magnesium and iron react with air and water is an indication of their relative positions in the ‘reactivity series’. Rusting is an oxidation reaction. 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