Question

Define transition metal.

Answer 1

a transition metal one which forms one or more stable ions which have incompletely filled d orbitals

Answer 2

Transition metals show variable valency and a strong tendency to form coordination compounds, and many of their compounds are coloured. They are metallic elements occupying a central block (Groups IVB–VIII, IB, and IIB, or 4–12) in the periodic table.