Correct order of spin only magnetic moment of the following complex ions is: (Given At…

Chemistry · JEE Main · NTA Exams — Coordination Compounds

Correct order of spin only magnetic moment of the following complex ions is:
(Given At. No. Fe: 26, Co: 27) (Jee Main 2023)

\(\left[\mathrm{FeF}_{6}\right]^{3-}>\left[\mathrm{CoF}_{6}\right]^{3-}>\left[\mathrm{Co}\left(\mathrm{C}_{2} \mathrm{O}_{4}\right)_{3}\right]^{3-}\)
\(\left[\mathrm{Co}\left(\mathrm{C}_{2} \mathrm{O}_{4}\right)_{3}\right]^{3-}>\left[\mathrm{CoF}_{6}\right]^{3-}>\left[\mathrm{FeF}_{6}\right]^{3-}\)
\(\left[\mathrm{FeF}_{6}\right]^{3-}>\left[\mathrm{Co}\left(\mathrm{C}_{2} \mathrm{O}_{4}\right)_{3}\right]^{3-}>\left[\mathrm{CoF}_{6}\right]^{3-}\)
\(\left[\mathrm{CoF}_{6}\right]^{3-}>\left[\mathrm{FeF}_{6}\right]^{3-}>\left[\mathrm{Co}\left(\mathrm{C}_{2} \mathrm{O}_{4}\right)_{3}\right]^{3-}\)

Answer

(A) [ FeF _ 6 ]^ 3- > [ CoF _ 6 ]^ 3- > [ Co ( C _ 2 O _ 4 )_ 3 ]^ 3-

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