AIIMS 2019 Chemistry Molecular Orbital Theory MCQ Question
Assertion : In vapour state, molecule shows paramagnetic behaviour. Reason : molecule has two paired electrons in the .
If both assertion and reason are true and reason is correct explanation of assertion.
If both assertion and reason are true and reason is not correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
Correct Answer
Detailed Explanation
The statement is true because the S₂ molecule, like O₂, exhibits paramagnetism due to the presence of two unpaired electrons in its molecular orbitals, specifically in the anti-bonding t₂g orbitals. This unpaired electron configuration leads to magnetic properties similar to those of O₂. Option B is incorrect as it contradicts the established understanding of S₂'s electronic structure, while options C and D are not applicable since the information provided allows for a definitive answer. Understanding the molecular orbital theory helps clarify the magnetic properties of diatomic molecules like S₂ and O₂.
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