A) \[Fe>Co>Ni\]
B) \[Ni>Co>Fe\]
C) \[Co>Ni>Fe\]
D) \[Fe>Ni>Co\]
Correct Answer: C
Solution :
The atomic weight of \[Co,Ni\ \text{and }Fe\] are 58.90, 58.60, 55.85 respectively. Therefore \[Co>Ni>Fe\] is the correct sequence of atomic weight.
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