Question

the metal which is not corroded by air water and acids

Answer 1

Answer:

gold

Explanation:

gold does not get corroded by water, air and acids are hence it is called a noble metal.

Answer 2

Answer:

copper mercury silver gold and platinum

Explanation:

These metals belong to the least reactive part of the reactivity series. Thus it is hard for them to combine withe oxygen carbon etc. Gold and silver are so unreactive that they are found in pure state in the nature.