MCQ
The highest oxidation state shown by elements of 3d transition series is ____________.
- ✓+7
- B+8
- C+5
- D+6
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$\ce{Cr_{(s)} | Cr^{3+}_{( aq)} || Fe^{2+}){( aq)} | Fe_{(s)}}$
Given: `"E"_("Cr"^(3+)//"Cr")^0` = −0.74 V,
`"E"_("Fe"^(2+)//"Fe")^0` = −0.44 V
Compound X is ____________.
