How would you account for the increasing oxidising power in the series `VO_2^+ < Cr_2O_7^(2-) < MnO_4^-` ?

How would you account for the following ? The oxidising power of oxoanions are in the order VO_2^(+) < Cr_2O_7^(2-) < MnO_4^(-) .

How would you account for the irregular variation of ionisation enthalpies (first and second) in the first series of the transition elements?

How would you account for the following? The atomic radii of the metals of the third (5d) series of transition elements are virtually the same as those of the corresponding members of the second (4d) series.

How would you account for the following : Of the d^4 species, Cr^(2+) is strongly reducing while Mn(III) is strongly oxidising.

How would you account for the following : SF_(6) is kinetically inert.

How do you account for the miscibility of ethoxy ethane with water.

How would you account for the following ? In a transition series of metals, the metal which exhibits the greatest number of oxidation states occurs in the middle of the series.

How would you account for the following ? The actinoids exhibit a larger number of oxidation states than the corresponding members in the lanthanoid series.

How would you account for the following ? Metal-metal bonding is more frequent in 4d or 5d series of transition metals than in the 3d series .