The property exhibited by only transitional elements
To form paramagnetic compounds
To form coloured compounds
To form complex compounds
To show inert tendency
In which of these processes platinum is used as a catalyst
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.
The number of hydrogen bonded water molecule(s) associated with $CuSO_4\cdot 5H_2O$ is
Which of the following is decreasing order of $I.P_2$ ?
Among $TiF^{2-}_6 ,CoF^{3-}_6 ,Cu_2Cl_2$ and $NiCl^{2-}_4$ the colourless species are