Given below are two statements: Statement I: $\mathrm{Cr}^{2+}$ is oxidising and $\mathrm{Mn}^{3+}$ is reducing in nature. Statement II: $\mathrm{Sc}^{3+}$ compounds are repelled by the applied magnetic field. In the light of the above statements, choose the most appropriate answer from the options given below:

• A

  Both Statement I and Statement II are correct
• B

  Both Statement I and Statement II are incorrect
• C

  Statement I is correct but Statement II is incorrect
• Correct answer
  D

  Statement I is incorrect but Statement II is correct

Solution

Half filled $d$-orbital (more stable) Therefore, $\mathrm{Mn}^{3+}$ acts as an oxidising agent. $\mathrm{Sc}^{3+}$ - [Ar] All elements are paired making it diamagnetic. Hence $\mathrm{Sc}^{3+}$ compounds are repelled when placed in an external magnetic field.

Hence, the correct answer is option: 'D'.