Question

displacement reactions and reactivity series

Answer 1

Reactivity series :
K
Na
Ca
Mg
Al
Zn
Fe
Sn
Pb
H
Cu
Hg
Ag
Au
Pt

Hope it helps you dear...

Answer 2

Displacement Reaction means a reaction in which a more reactive element displace a less reactive element from the solution of it's compound.
Reactivity series .....The arrangement of metals in the order of their decreasing reactivities.