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Statement-1 : According to crystal field...

Statement-1 : According to crystal field theory, during complex formation, the d-orbitals split and form two. sets of orbitals `t_(2g) and e_g`.
Statement-2 : Splitting ofd-orbitals occurs only in case of strong field ligands.

A

Statement 1 is True, Statement 2 is True, Statement 2 is Correct explanation for Statement 1.

B

Statement 1 is True, Statement 2 is True, Statement 2 is NOT a correct explanation for Statement 1.

C

Statement 1 is True, Statement 2 is False.

D

Statement 1 is False, Statement 2 is True.

Text Solution

Verified by Experts

The correct Answer is:
C
Splitting of orbital takes place for both weak and strong filed ligands. Pairing of electrons in these orbital s depends on the strength of the filed.
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Knowledge Check

  • Assertion : According to crystal field theory, during complex formation, the d-orbitals split in octahedral field to form two sets of orbitals t_(2g) and e_(g) . Reason : Splitting of d-orbitals occurs only in case of strong field ligands.

    A
    If both (A) and (R) are correct and (R) is the correct explanation of (A).
    B
    If both (A) and (R) are correct, but (R) is not the correct explanation of (A).
    C
    If (A) is correct, but(R) is incorrect.
    D
    If both (A) and (R) are incorrect.

  • Statement 1: According to the transition state theory, for the formation of an activated complex, one of the vibrational degree of freedom is converted into the translational degree of freedom. Statement 2: The energy of the activated complex is higher than the energy of the reactant molecules.

    A
    Statement 1 is True, statement 2 is True, Statement 2 is Correct explanation for Statement 1.
    B
    Statement 1 is True, Statement 2 is True, Statement 2 is NOT a correct explanation for Statement 1.
    C
    Statement is True, Statement 2 is False.
    D
    Statement is False, Statement 2 is True.

  • Relative to the average energy in the spherical crystal field, the e_g orbitals in octahedral field is

    A
    raised by `(2//5)Delta_0`
    B
    lowered by `(2//5)Delta_0`
    C
    raised by `(3//5)Delta_0`
    D
    lowered by `(3//5)Delta_0`

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