Question

Cadmium is less reactive than tin.

• A. True
• B. False

Answer 1

The correct option is B False

Displacement reaction: Reaction in which one of the higher reactive elements displaces a less reactive element from its solution.

$\mathrm{A}+\mathrm{BC}\to \mathrm{AC}+\mathrm{B}$(Here A is more reactive than B)

• Reactivity series

$\mathrm{K}>\mathrm{Na}>\mathrm{Li}>\mathrm{Ba}>\mathrm{Sr}>\mathrm{Ca}>\mathrm{Mg}>\mathrm{Al}>\mathrm{Mn}>\mathrm{Zn}>\mathrm{Cr}>\mathrm{Fe}>\mathrm{Cd}>\mathrm{Co}>\mathrm{Ni}>\mathrm{Sn}>\mathrm{Pb}>\mathrm{H}>\mathrm{Sb}>\mathrm{Bi}>\mathrm{Cu}>\mathrm{Hg}>\mathrm{Ag}>\mathrm{Au}>\mathrm{Pt}$

• Here potassium is the most reactive metal and platinum is the least reactive metal in this series.
• So from the reactivity series, $\mathrm{Cd}$ (Cadmium) is more reactive than $\mathrm{Sn}$ (Tin).

Thus, the above statement is false.

The correct statement should be cadmium is more reactive than tin.