question_answer 52)

    Generally, transition elements form coloured salts due to the presence of unpaired electrons. Which of the following compounds will be coloured in solid state? (a)                         (b)           (c)                                (d)

Answer:

                                                         (b) Transition elements form coloured salt due to the presence of unpaired electrons. In , Cu (ll) contain one unpaired electron hence,  is coloured in solid state.