d and f Block Elements

The $\mathrm{Fe}^{3+}$ ion, having five unpaired electrons, shows a spin-only magnetic moment closest to

Among the following transition metal ions, how many have the same number of unpaired electrons, and thus approximately the same magnetic moment?
(i) $\mathrm{Cr}^{3+}$
(ii) $\mathrm{Fe}^{3+}$
(iii) $\mathrm{Mn}^{2+}$
(iv) $\mathrm{Co}^{2+}$...

In the following species, how many species have same magnetic moment? (i) $ \mathrm{Cr}^{2+} $ (ii) $ \mathrm{Mn}^{3+} $ (iii) $ \mathrm{Ni}^{3+} $ (iv) $ \mathrm{Sc}^{2+} $ (v) $ \mathrm{Zn}^{2+} $ (vi) $ \mathrm{V}^{3+} $ (vii) $ \mathrm{...

The spin only magnetic moment of $ \mathrm{Fe}^{3+} $ ion (in BM) is approximately.

Which of the following is not a mixed pair of oxides?