Foran octahedral complex, with P.E aprox. to 0 d6 electronic configuration of central metal ion in presence of strong field ligand , find incorrect ststement (s) regarding crystal field stablisation energy (CFSE) spiliting energy {(delta not)[/0]}

(a)[CFSE] will be = to spilting energy /0

(b)[CFSE] will be than spilting energy /0

(c) [CFSE] will be

(d) Both [CFSE] spilting energy R same for each octahedral complex with any electronic configuration of central metal atom


The question is not complete and has errors.
However, the concept is as follows and hope this is helpful.


CFSE  = ao - bP
where,
CFSE is crystal field stablization energy
 a is the number of electrons in t2g orbitals (for a low spin d6 complex)
 o is the splitting energy of d-orbitals in an octahedral field
  b is the number of additonal spin  pairs in comparison to high spin state.
  if P =0 or ~0, then  CFSE = ao  
CFSE is  less than the splitting energy for d6 configuration in low spin complex.  So, it can never equal splitting energy.
Hence, statement a is false.
For a high spin d5 configuration, CFSE = splitting energy=0. Also for d0 configuration.

CFSE  is always less then  splitting energy for a low spin complex. So, b is a correct statement.

The third statement is probably,
CFSE > splitting energy  which is also a false statement.
Statement 4:Both [CFSE] spilting energy R same for each octahedral complex with any electronic configuration of central metal atom
This statement is similar to the first statement and hence is false.​
 

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