How would you account for the following: The d1 configuration is very unstable in ions.

How would you account for the following ? The third ionization enthalpy of manganese (Z = 25) is exceptionally high.

How would you account for the following : The electron gain enthalpy with negative sign for fluorine is less than that for chlorine, still fluorine is a stronger oxidising agent than chlorine.

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

Account for the following: Ozone is thermodynamically unstable.

How would you account for the following: Cobalt(II) is stable in aqueous solution but in the presence of complexing reagents it is easily oxidised.

How would you account for the following : The acidic strength of compounds increases in the order : PH_3< H_2S

How would you account for the following: There is a greater range of oxidation states among the actinoids than among the lanthanoids.

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 name the following compounds?