MCQ
Which element can have oxidation state from $4 $ to $6 $?
- A$Fe$
- B$Mg$
- C$Co$
- ✓$Cr$
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$A$. $\mathrm{Ar}$ $B$. $\mathrm{Br}$ $C. F$ $D$. $\mathrm{S}$
Choose the most appropriate from the options given below:
