how can we extract metals of low reactivity, name any two
Answers
Electrolysis is commonly used to extract these metals and requires a lot of electric current (energy) to reduce them to extract the metal. Less reactive metals, such as iron, form less stable oxides and other compounds.
In a reactivity series, the most reactive element is placed at the top and the least reactive element at the bottom. More reactive metals have a greater tendency to lose electrons and form positive ions .
The less reactive metals are extracted by the reduction of their oxides by heat alone. Example: Mercury (II) sulphide ore is roasted in air when mercury (II) oxide is formed. When this mercury (II) oxide is heated to about 300oC, it decomposes to form mercury metal.
Answer:
Metals more reactive than carbon, such as aluminium, are extracted by electrolysis, while metals less reactive than carbon, such as iron, may be extracted by reduction with carbon. As gold is so unreactive, it is found as the native metal and not as a compound. It does not need to be chemically separated.
example- Mercury and copper, which belong to the least reactivity .
Explanation:
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