Explain giving reasons: (i) Transition metals and many of their compounds show paramagnetic behaviour. (ii) The enthalpies of atomisation of the transition metals are high. (iii) The transition metals generally form coloured compounds. (iv) Transition metals and their many compounds act as good catalyst.

Explanation

Due to the presence of large number of unpaired electrons in their atoms, they form strong interatomic metallic bonds. Hence, transition metals have high enthalpies of atomization.