ComedkD And F Block ElementsCOMEDK 2026 Morning ShiftMCQ+1 / -02026The ion that has a spin only magnetic moment of 5.9 BM is:A$\mathrm{Fe}^{3+}$B$\mathrm{Mn}^{3+}$C$\mathrm{Ni}^{2+}$D$\mathrm{Co}^{3+}$Check AnswerClear SelectionReveal AnswerShow Explanation