A) \[Fe\]
B) \[Ni\]
C) \[Cr\]
D) \[Co\]
Correct Answer: C
Solution :
\[(C{{r}^{+6}}{{K}_{2}}C{{r}_{2}}{{O}_{7}}-\text{yellow}\]\[C{{r}^{+\text{3}}}C{{r}_{2}}{{(S{{O}_{4}})}_{3}}\]- green)You need to login to perform this action.
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