Here's why:
* Iron is more reactive than silver. This means iron can displace silver from its compound.
* The reaction: Iron (Fe) reacts with silver nitrate (AgNO₃) to form iron(II) nitrate (Fe(NO₃)₂ ) and silver (Ag).
The chemical equation:
Fe(s) + 2AgNO₃(aq) → Fe(NO₃)₂(aq) + 2Ag(s)