Question

Which of the following is/are inner orbital complex as well as dimagnetic in nature :
[Atomic no. $\rightarrow Cr =24, Mn =25, Fe =26, Co =27$ ]

• A. $\left[ Zn \left( NH _{3}\right)_{6}\right]^{2+}$
• B. $\left[ Ni \left( NH _{3}\right)_{6}\right]^{2+}$
• C. $\left[ Cr \left( NH _{3}\right)_{6}\right]^{3+}$
• D. $\left[ Co \left( NH _{3}\right)_{6}\right]^{3+}$

Answer 1

Answer: (D)

In $\left[ Co \left( NH _{3}\right)_{6}\right]^{3+}$

inner orbital, dimagnetic nature