Number of ions which given blue colour in aqueous state:
`V^(+4),Ni^(+2),Ti^(+3),Co^(+2),Fe^(+3),Cu^(+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 the following ions will be coloured in aqueous solution ? Ti^(3+), V^(3+), MnO_(4)^(-), Sc^(3+), Mn^(2+), Fe^(3+), Co^(2+) .

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

Calculate the number of d-electrons in the following ions : Ti^(2+), V^(2+), Cr^(3+), Mn^(2+), Fe^(2+), Fe^(3+), Co^(2+), Ni^(2+), Cu^(2+) .

Predict which of the following will be coloured in aqueous solution ? Ti^(3+), V^(3+) , Sc^(3+) , Fe^(3+) , Co^(2+) and MnO_4^Theta

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.

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.