Given below are two statements:
Statement (I): In octahedral complexes, when 
high spin complexes are formed.
When 
low spin complexes are formed.
Statement (II): In tetrahedral complexes because of 
In the light of the above statements, choose the most appropriate answer from the options given below:
Text Solution
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In octahedral complexes, which have a coordination number (CN) of 6, the formation of high spin or low spin complexes depends on the relative magnitude of the crystal field splitting energy, denoted as 
, and the pairing energy (P.E.):
If 
is less than the pairing energy ( 
P.E.), high spin complexes are formed.
If 
is greater than the pairing energy ( 
P.E.), low spin complexes are formed.
In tetrahedral complexes, where the coordination number is 4:
The crystal field splitting energy ( 
) is typically less than the pairing energy ( 
P.E.), resulting in the formation of mainly high spin complexes. Low spin complexes are rarely observed in tetrahedral coordination due to this energy consideration.
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