Answer to Question #76451 in Inorganic Chemistry for rimpa rani

Question

Which metals are called class ‘a’ elements or ‘hard acids’ and why?

Answer 1

Class A metals are metals that form hard acids. Hard acids are acids with relatively ionic bonds. These metals, such as iron, aluminium, titanium, sodium, calcium and the lanthanides, would rather bond with fluorine than iodine. They form stable products with hard bases, which are bases with ionic bonds.