MCQ
The pair in which both the species have the same magnetic moment (spin only) is :
- A$\left[\operatorname{Mn}\left( H _{2} O \right)_{6}\right]^{2+}$ and $\left[ Cr \left( H _{2} O \right)\right]^{2+}$
- B$\left[ Cr \left( H _{2} O \right)_{6}\right]^{2+}$ and $\left[ CoCl _{4}\right]^{2-}$
- ✓$\left[ Cr \left( H _{2} O \right)_{6}\right]^{2+}$ and $\left[ Fe \left( H _{2} O \right)_{6}\right]^{2+}$
- D$\left[ Co ( OH )_{4}\right]^{2-}$ and $\left[ Fe \left( NH _{3}\right)_{6}\right]^{2+}$
