‹ Back to the paper
Give reasons for the following.
Give reasons for the following: compounds are more stable than compounds.
Give reasons for the following:
$\text{Mn}^{2+}$ compounds are more stable than $\text{Fe}^{2+}$ compounds.
Answer
Answer
AIBecause $\mathrm{Mn^{2+}}$ has the half-filled $3d^5$ configuration, which is extra stable, whereas $\mathrm{Fe^{2+}}$ is $3d^6$ and easily loses one electron to become $3d^5$.
From ISC 2023 Chemistry Paper 1, question 3(ii).