Explanation:
The transition metals have the following physical properties in common:
they are good conductors of heat and electricity
they can be hammered or bent into shape easily
they have high melting points (but mercury is a liquid at room temperature)
they are usually hard and tough
they have high densities
The transition metals have the following chemical properties in common:
they are less reactive than alkali metals such as sodium
they form coloured ions of different charges
some are very unreactive (silver and gold)
many are used as catalysts
