Which of the following ions is the most stable?

  • A
    $[Fe(Cl)_6]^{3-}$
  • B
    $[Fe(H_2O)_6]^{3+}$
  • C
    $[Fe(CN)_6]^{4-}$
  • D
    $[Fe(NH_3)_6]^{3+}$

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The $CN^-$ ion exhibits which of the following properties towards metal components: $(a)$ Reducing agent,$(b)$ Oxidizing agent,$(c)$ Complexing agent?

Which of the following exhibits highest molar conductivity?

Which of the following factors tends to increase the stability of metal ion complexes?

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