Chemistry-Crystal Field Theory
NEET Chemistry Crystal Field Theory Assertion Reason Question
Type: Assertion Reason-assertion-Hard-Class 12
Assertion (A): In a tetrahedral crystal field, the energy of the t2 orbitals increases compared to the eg orbitals.
Reason (R): The splitting pattern in a tetrahedral field is opposite to that in an octahedral field due to the different geometry and ligand arrangements.
A
Both A and R are true and R is the correct explanation of A.
B
Both A and R are true but R is not the correct explanation of A.
C
A is true but R is false.
D
A is false but R is true.
Correct Answer
Option D
Detailed Explanation
In a tetrahedral crystal field, the t2 orbitals actually decrease in energy, not increase, as there is less ligand repulsion. The reason statement correctly identifies the opposite splitting pattern compared to an octahedral field.
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