24. Transition Metals and Coordination Compounds

Determine the spin and number of unpaired electrons in the following complex ion: [Mn(en)₃]³⁺.

Determine the spin and number of unpaired electrons in the following complex ion: [Cd(H­₂O)₄]²⁺.

Which of the following complex ions is/are diamagnetic in nature?

I. [Mn(Br₄)]^2–                              II. [V(NO₂)₄]^4–                                 III. [Zn(NH₃)₄]²⁺                          IV. [Sc(H₂O)₆]³⁺

How many electrons will be unpaired in the complex ion [Co(OH)₃]³⁻ ?

Predict the number of unpaired electrons in the [Cr(en)₃]²⁺ ion.

How many electrons will be unpaired in the complex ion [FeF₆]³⁻ ?