Question

what is the general format of displacement reaction

Answer 1

high reactive element displace least reactive element

high to low reactive element -
k
na
ca
mg
al
zn
fe
pb
h
cu
hg
ag
pb

Answer 2

This is comparable to single-displacement reactions in chemistry. A single-displacement reaction, also known as a single-replacement reaction, is a type of chemical reaction where an element reacts with a compound and takes the place of another element in that compound.