Predict which of the following will be coloured in aqueous solution? `Ti^(3+),V^(3+), Cu^(+),Sc^(3+),Mn^(2+),Fe^(3+)` and `Co^(2+)`. Give reasons for each.

Predict which of the followingwill be coloured in aqueous solution? Ti^(3+),V^(3+),Cu^(o+),Sc^(3+),Mn^(2+),Fe^(2+) and Co^(2+) Give reasons for each.

Which of the following ions give coloured aqueous solution?

Out of the following ions Ti^(3+), V^(3+), Cu^(+), Sc^(3+), Mn^(3+) and Co^(2+) the colourless ions will be

Which of the following ions is the most stable in aqueous solution ? (At . No . Ti = 22, V = 23, Cr = 24, Mn = 25)

(a) Which metal in the first transition series (3d series) exhibits +1 oxidation state most frequently and why? (b) Which of the following cations are coloured in aqueous solutions and why? Sc^(3+),V^(3+),Ti^(4+),Mn^(2+)(At. "no".Sc=21,V=23,Ti=22,Mn=25)

Which of these ions is expected to be colored in aqeous solution? [I] Fe^(3+) [II] Zn^(2+) [III] AI^(3+) [IV] Sc^(3+)

How many of the following ions have spin mangnetic moment more than 4 B.M . Ti^(3+), Cu^(+), Ni^(2+),Fe^(3+),Mn^(2+), Co^(2+)

State the reason for the following : (i) Cu (I) ion is not stable in an aqueous solution. (ii) Unlike Cr^(3+),Mn^(2+),Fe^(3+) and the subsequent other M^(2+) ions of the 3d series, the 4d and 5d series metals generally do not form stable oxidation states.

Complete the following chemical equation: (i) MnO_(4)^(-)(aq)+s_(2)O_(3)^(2-)(aq)+H_(2)O(I) to (ii) MnO_(4)^(-) +NO_(2)^(-)+H^(+) to State reason for the following : (i) Cu(I) ion is not stable in an aqueous solution. (ii) Unlike Cr^(3+),Mn^(2+),Fe^(3+) and the subsequently other M^(2+) ions of the 3d series of elements, the 4d and the 5d series metals generally do not form stable cationic species.

In which of the following paris both the ions are coloured in aqueous solution? (Atomic number, Sc - 21, Ti = 22, Ni = 28, Cu = 29, Co = 27) (a) Ni^(2+), Ti^(3+) (b) Sc^(3+),Ti^(3+) (c) Sc^(3+),Co^(2+) (d) Ni^(2+),Cu^(+)