Question

what is transient metal?

Answer 1

any of the set of metallic elements occupying a central block (Groups IVB–VIII, IB, and IIB, or 4–12) in the periodic table, e.g. iron, manganese, chromium, and copper. Chemically they show variable valency and a strong tendency to form coordination compounds, and many of their compounds are coloured.

Answer 2

These elements r present in between s-block elements and p-block elements . Transition means​ in between,so they r called.