Which of the following is not a characteristic of transition element
These forms organometallic compounds
These forms large number of complexes
These represents variable oxidation states
They have maximum tendency to form ionic compound
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.
Comment on the statement that elements of the first transition series possess many properties different from those of heavier transition elements.
Which of the following statements is incorrect
Although $Zr$ belongs to $4d$ and $Hf$ belongs to $5d$ transition series but it is quite difficult to separate them. Why ?
The transition metals exhibit higher enthalpies of atomisation due to