Question

Which one of the following sets correctly represents the increase in the paramagnetic property of the ions?

Options

• \[\ce{Ti^{3+} < Fe^{2+} < Cr^{3+} < Mn^{2+}}\]

• \[\ce{Ti^{3+} < Mn^{2+} < Fe^{2+} < Cr^{3+}}\]

• \[\ce{Mn^{2+} < Fe^{2+} < Cr^{3+} < Ti^{3+}}\]

• \[\ce{Ti^{3+} < Cr^{3+} < Fe^{2+} < Mn^{2+}}\]

Answer 1

\[\ce{Ti^{3+} < Cr^{3+} < Fe^{2+} < Mn^{2+}}\]

Explanation:

No. of unpaired electrons: \[\ce{Ti^{3+} (1), Cr^{3+} (3), Fe^{2+} (4), Mn^{2+} (5)}\]

Paramagnetism depends on the number of unpaired electrons.