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(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. "nos".Sc=21,V=23,Ti=22,Mn=25) |
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