Chemistry-Transition Elements
NEET Chemistry Transition Elements MCQ Question
Type: MCQ-diagram based-Hard-Class 12
Consider a diagram of a d-orbital with various electron spin arrangements. Which of the following configurations results in the highest exchange energy?
A
d^5 with all unpaired spins
B
d^6 with two paired spins
C
d^4 with two paired spins
D
d^3 with all unpaired spins
Correct Answer
Option A
Detailed Explanation
The highest exchange energy corresponds to the maximum number of unpaired electrons, as exchange energy is proportional to the number of parallel spin pairs. A d^5 configuration with all unpaired spins maximizes exchange energy.
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