What are metals? Give any two examples.
Metals are elements which form electropositive ions by losing electrons.
For eg. Iron, copper, gold, etc.
what is aquaregia? which element is found in aquaregia that dissolve gold?
The process of reacting hydrochloric acid (Hcl) and sulphuric acid (H2SO4) in the ratio of (3:1) is called aquaregia.
Calaverite element is found in aquaregia that dissolve gold.