(a) Following are the transition metal ions of 3d series :
Ti4+, V2+,Mn3+, Cr3+
(Automic numbers :Ti = 22, V = 23,Mn = 25, Cr = 24 )
Answer the following :
(i) Which ion is most stable in an aqueous solution and why ?
(ii) Which ion is a strong oxidising agent and why ?
(iii) Which ion is colourless and why ?
(b) Complete the following equations :
(i)
(ii)
(a) (i) Cr3+ is most stable in aqeous solution. according to crystal field Theory it has t2g3 and is extremely stable
(ii) Mn3+ is a strong oxidising because it can easily be converted to Mn2+ having ds configuration which is extra stable
(iii) Ti4+ is colourless because it has 3d0 configuration and therefore no unpair electrons.
(b) (i)
(ii)