Which of the following is the most unreactive metal?
Gold
The explanation for the correct option -
(D) Gold
Gold -
The explanation for the incorrect options -
(A) Iron - It forms rust when exposed to moisture and air.
(B) Lead - It also reacts with acids very easily.
(C) Aluminium - It also reacts with oxygen in the air.
Hence, option (D) is correct. Gold is the most unreactive metal of the above-given options.