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Which of the following is the correct sequence of atomic weights of the given elements?
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a
Ni > Co > Fe
b
Fe > Co > Ni
c
Co > Fe > Ni
d
Co > Ni > Fe
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Correct option is D
The atomic weight of Co,Ni 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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