Predict which of the following will be coloured in aqueous solution ?
`Ti^(3+) , V^(3+) , Sc^(3+) , Mn^(2+) , Fe^(3+) , Co^(2+) ` and `MnO_(4)^(-)`

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

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.

(a) Calculate the magnetic moment of a divalent ion in aqueous solution if its atomic number is 25. (b) Predict which of the following will be coloured in aqueous solution: Sc^(3+) ,Fe^(3+) , Ti^(4+), V^(3+) (Atomic nos. of Sc, Fe, Ti and V are 21, 26, 22 and 23 respectively)

Which of the following ions are expected to be coloured ? Ni^(2+) , Ti^(3+) , Cu^(+) , Sc^(3+) , Zn^(2+)

Predict the number of species which will be colourless in aqueous solution, among the following Ti^(3+),V^(3+),Cu^(+),Sc^(3+),Mn^(2+),Fe^(3+),Co^(2+)

Which of these ions is expected to be coloured in aqueous solution? (P) Fe^(3+) (Q) Ni^(2+) (R) Al^(3+)

(i) Which of the following are coloured in aqueous solution ? Give reasons : V^(3+) , Cu^(+) , Sc^(3+) , Fe^(3+) (ii) Which of the following oxides are amphoteric ? Mn_2O_7, CrO_3, Cr_2O_3, V_2O_5 .