Chemical properties of a metal nail

Iron nails rust when the iron reacts with the oxygen in the atmosphere or in water, forming iron oxide, a new chemical. The chemical reaction is Fe + O2 --> FeO, or Fe + O2 --> Fe2O3.

clouds form

solid ice forms on leaves.

water droplets form on grass.

answer:

technetium is the most reactive. this is followed by silver. the least reactive out of these three elements is strontium.