In which of the following pairs of ions, the higher oxidation state in aqueous solution is more stable than the other?
$$\eqalign{
& \left( {\text{i}} \right)T{l^ + },T{l^{3 + }} \cr
& \left( {{\text{ii}}} \right)C{u^ + },C{u^{2 + }} \cr
& \left( {{\text{iii}}} \right)C{r^{2 + }},C{r^{3 + }} \cr
& \left( {{\text{iv}}} \right){V^{2 + }},V{O^{2 + }} \cr} $$
A.
(i), (ii)
B.
(ii), (iii)
C.
(ii), (iv)
D.
(ii), (iii), (iv)
Answer :
(ii), (iii), (iv)
Releted MCQ Question on Inorganic Chemistry >> D and F Block Elements
Releted Question 1
When same amount of zinc is treated separately with excess of sulphuric acid and excess of sodium hydroxide, the ratio of volume of hydrogen evolved is