(i) Carbonate and Sulphide ores are usually converted into oxides during the process of extraction of metals. (ii) Ionic compounds have generally high melting points. (iii) Hydrogen is not a metal, but it has been assigned a place in the ...
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Is the following answer perfect? When a metal is attacked by substances around it, such as moisture, acids, etc, it is said to corrode and this process is called corrosion. Corrosion of iron is called rusting.