Valence bond theory successfully explains the magnetic behaviour of complexes. The…
Chemistry · JEE Advanced · NTA Exams — Coordination Compounds
Valence bond theory successfully explains the magnetic behaviour of complexes. The substances which contains unpaired electrons are paramagnetic and its character increases as the number of unpaired electrons increases. Magnetic moment of a complex can be determined experimentally and by using formula \(\sqrt{\mathrm{n}(\mathrm{n}+2)}\) and we can determine the number of unpaired electrons in it. This information is important in writing the electronic structure of complex which in turn also useful in deciding the geometry of complex
There are four complexes of Ni. Select the complex/es which will be attracted by magnetic field:
(I) [Ni(CN)4]2– (II) [NiCl4]2–
(III) Ni(CO)4 (IV) [Ni(H2O)6]2+
- I only
- II and IV only
- II, III and IV
- II and IV
Answer
(D) II and IV
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