Ncert Exercises & Solutions

Atomic number of Mn Fe and Co are 25, 26 and 27 respectively. Which of the following inner orbital octahedral complex ions are diamagnetic?

a. ${[Co {({NH}_{3})}_{6}]}^{3 +}$

b. ${[Mn {(CN)}_{6}]}^{3 -}$

c. ${[F e {(C N)}_{6}]}^{4 -}$

d. ${[Fe {(C N)}_{6}]}^{3 -}$

Choose the correct option
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, c)