MCQ
Which of the following has the minimum bond length ?
- A$O_2^+$
- B$O_2^-$
- ✓$O_2^{2-}$
- D$O_2$
Bond order of $O_{2}=\frac{10-7}{2}=1.5$
Bond order of $O_{2}^{2-}=\frac{10-8}{2}=1$
Bond order of $O_{2}=\frac{10-6}{2}=2$
Maximum bond order $=$ minimum bond length.
Bond length is minimum for $O_{2}^{+}$
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

$(I)$ the highest oxidation state of iron is $+ 6$ in $K_ 2FeO_4$
$(II)$ that the iron shows $+ 2$ oxidation state with six electrons in the $3d$ orbitals
$(III)$ the common oxidation state of iron is $+3$ with five unpaired electrons in $3d$ orbital

