Chemistry-(general)
NEET Chemistry (general) MCQ Question
Type: MCQ-conceptual-Easy-Class 12
Which of the following statements about coordination compounds is correct?
A
Diamagnetic octahedral complexes have no unpaired electrons.
B
All octahedral complexes exhibit high spin configurations.
C
The geometry of a complex cannot be predicted from its magnetic behavior.
D
Cobalt in [Co(NH₃)₆]³⁺ is in the +2 oxidation state.
Correct Answer
Option A
Detailed Explanation
Statement A is correct because diamagnetic octahedral complexes, like [Co(NH₃)₆]³⁺, have no unpaired electrons, leading to their diamagnetic nature. Statement B is incorrect as not all octahedral complexes are high spin. Statement C is false since the geometry can often be predicted from magnetic behavior. Statement D is incorrect as cobalt in this complex is in the +3 oxidation state.
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