1. Tardigrade
  2. Question
  3. Chemistry
  4. Atomic number of Mn, Fe and Co are 25,26 and 27 respectively. Which of the following inner orbital octahedral complex ions are diamagnetic? I. [ Co ( NH 3)6]3+ II. [ Mn ( CN )6]3- III. [ Fe ( CN )6]4- IV. [ Fe ( CN )6]3- Choose the correct option.

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Q. Atomic number of $Mn, Fe$ and $Co$ are $25,26$ and $27$ respectively. Which of the following inner orbital octahedral complex ions are diamagnetic?
I. $\left[ Co \left( NH _{3}\right)_{6}\right]^{3+}$
II. $\left[ Mn ( CN )_{6}\right]^{3-}$
III. $\left[ Fe ( CN )_{6}\right]^{4-}$
IV. $\left[ Fe ( CN )_{6}\right]^{3-}$
Choose the correct option.

Coordination Compounds

Solution:

$\left[ Co \left( NH _{3}\right)_{6}\right]^{3+}$ and $\left[ Fe ( CN )_{6}\right]^{4-}$, inner orbital complex ions are diamagnetic.