Question

what is displacement reaction?​

Answer 1

A single-displacement reaction, is a chemical reaction in which one element replaces an/other element in a compound.

It can be represented generically as:

A + B-C → A-C + B

This will most often occur if A is more reactive than B, thus giving a more stable product. 

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Answer 2

Displacement reaction in metals. Displacement reaction in metals. In displacement reaction a more reactive metal displaces a less reactive metal but a less rwactive metal cannot displace a more reactive metal.