Question

state the change that occurs when an iron nail is left
exposed to humid air .write also a balanced chemical equation
for the reactions that occurs.​

Answer 1

Explanation:

Oxygen present in the atmosphere reacts with the iron in the presence of moisture or water vapour to form a reddish brown coating called iron oxide or rust when an iron object is left exposed to humid atmosphere.

Answer 2

Answer:

Oxygen present in the atmosphere reacts with the iron in the presence of moisture or water vapour to form a reddish brown coating called iron oxide or rust when an iron object is left exposed to humid atmosphere