MCQ
What bond order does $O_2^{2 - }$ have
- A$3$
- B$2$
- ✓$1$
- D$0.5$
$B.O. = \frac{1}{2}[10 - 8] = \frac{2}{2} = 1$.
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$(A)$ The $M ^{3+} / M ^{2+}$ reduction potential for iron is greater than manganese
$(B)$ The higher oxidation states of first row $d$ block elements get stabilized by oxide ion.
$(C)$ Aqueous solution of $Cr ^{2+}$ can liberate hydrogen from dilute acid.
$(D)$ Magnetic moment of $V ^{2+}$ is observed between $4.4-5.2\,BM$
Choose the correct answer from the options given below: