write the reactivity series of metal according to their increasing order of their reactivity
Answers
Answer:
Reactivity Series of Metals
The order of intensity of reactivity is known as reactivity series. Reactivity of element decreases on moving from top to bottom in the given reactivity series.
In the reactivity series, copper, gold, and silver are at the bottom and hence are least reactive. These metals are known as noble metals. Potassium is at the top of the series and hence is most reactive.
Reactivity of some metals are given in descending order
K > Na > Ca > Mg > Al > Zn > Fe > Pb > Cu
Examples:
Iron displaces copper from copper sulphate solution.
Fe + CuSO4 ⇨ FeSO4 + Cu
Similarly, aluminium and zinc displace copper from the solution of copper sulphate.
2Al + 3CuSO4 ⇨ Al2(SO4 )3 + 3Cu
Zn + CuSO4 ⇨ ZnSO4 + Cu
In all the above examples, iron, aluminium and zinc are more reactive than copper. That’s why they displace copper from its salt solutio