Giving reasons indicate which one of the following would be coloured ?
`Cu^(+), V^(2+),Sc^(3+),Ni^(2+)` (atomic number : Cu = 29 , V = 23 , Sc=21 , Ni = 28)

Which one of the following forms a colourless solution in aqueous medium ? (Atomic number : Sc =21, Ti = 22, V = 23 , and Cr = 24 )

The aqueous solution containing which one of the following ions will be colourless (Atomic number Sc = 21, Fe = 26, Ti = 22, Mn = 25)

Which of the following is electronic configuration of Cu^(2+) (Z = 29) ?

Which of the following is paramagnetic ? Sc^(3+) (Z=21),Cu^(+)(Z=29)

Which of the following co-ordinate complexes is an exception to EAN rule ? (Given atomic number Pt = 078, Fe = 26, Zn = 30, Cu = 29 )

Which of the following is an inner orbital complex as well as diamagnetic in behaviour [Atomic numbers Zn = 30, Cr = 24, Co = 27, Ni = 28.]

Write the hybridization and magnetic character of the following complexes: (i) [Fe(H_2O)_6]^(2+) (ii) [Ni (CN)_4]^(2-) [Atomic number : Fe= 26,Ni = 28 ]

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 one of the following transition metal ions is diamagnetic? Co^(2+) , Ni^(2+) , Cu^(2+) , Zn^(2+)

(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)