Q23 / 60 · IAT (IISER) 2017 · Chemistry
A complex of metal $\mathrm{M}^{n+}$ has the following electronic distribution in $d$ orbitals,

The neutral M has a ground state electronic configuration of $[\operatorname{Ar}] 4 \mathrm{~s}^2 3 \mathrm{~d}^6$. Which of the following complexes is consistent with the electronic distribution of $\mathrm{M}^{n+}$ (as described above)?

The neutral M has a ground state electronic configuration of $[\operatorname{Ar}] 4 \mathrm{~s}^2 3 \mathrm{~d}^6$. Which of the following complexes is consistent with the electronic distribution of $\mathrm{M}^{n+}$ (as described above)?
- A$\left[\mathrm{M}(\mathrm{CN})_6\right]^{4-}$
- Correct answerB$\left[\mathrm{MF}_6\right]^{3-}$
- C$\left[\mathrm{MF}_6\right]^{4-}$
- D$\left[\mathrm{M}(\mathrm{CN})_6\right]^{3-}$
Hence, the correct answer is option: 'B'.