Short Answer TypeExplain the following:
[Ni(H2,O)6]2+ turns blue when changed to [Ni(NH3)6]3+ by adding NH3
Explain the following:
Violet coloured [Cr(H2O)6]3+ becomes bright blue when reduced to [Cr(H2O)6]2+
Long Answer TypeShort Answer TypeFormation of complex is an exothermic process because there is force of attraction between central metal ion and ligands which breaks and
energy Release and new bond is formed.
Stability of complex decreases with the increase in temperature because formation of complex is exothermic process. On heating, coordinate bond between central metal ion and ligand will break.
Give the number of unpaired electrons in the following complex ions:
[FeF6]4– and [Fe(CN)6]4–
Name the isomerism exhibited by the following pair of coordination compounds:
[Co(NH3)5Br]SO4 and [Co(NH3)5SO4] Br
Long Answer TypeExplain as to how the two complexes of nickel, [Ni(CN)4]2– and Ni(CO)4, have different structures but do not differ in their magnetic behaviour (Ni = 28).
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