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Coordination Complexes (GATE)
Assertion: In complex [Mn(H2O)6]+2, the d-d transitions are spin allowed.
Reason: Each of the d-orbitals of Mn(II) is singly occupied.
There are two statements, Assertion (A) and Reason (R). Consider both the statements independently and mark your answer as under:
1. A and R are both correct and R is the correct explanation of A.
2. A and R are both correct and R is not the correct explanation of A.
3. A is correct and R is incorrect.
4. A is incorrect and R is correct.
5. A and R are both incorrect.
This option is correct because in case of [Mn(H2O)6]+2, the d-d transitions are spin forbidden because each of the d-orbitals is singly occupied (half filled) and the spin multiplicity changes when the electron goes to an excited state from ground state.