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Explanation:
The reaction in which one metal replaces another metal from its compound is known as
displacement reaction. In this reaction more reactive metal displaces the weaker one from its
compound in aqueous solution. For example, in the reaction between copper sulphate and zinc, zinc
replaces copper from copper sulphate to form zinc sulphate.
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Answer:
2
Explanation:
option 2 is not possible because l=n-1 but n,l both are given as 3
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