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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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detailed solution

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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