MCQ
Propene when heated with chlorine at about ${500\,^o}C$ forms
- ✓$C{H_2}Cl.CH = C{H_2}$
- B$C{H_3}.CHCl.C{H_2}Cl$
- C$C{H_2}Cl.CHCl.C{H_2}Cl$
- DAll the three
This reaction is called allylic halogenation reaction because halogenation occurs at the allylic position of an alkene
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($A$) $\mathrm{C}_2^{2-}$ is expected to be diamagnetic
($B$) $\mathrm{O}_2{ }^{2+}$ is expected to have a longer bond length than $\mathrm{O}_2$
($C$) $\mathrm{N}_2^{+}$and $\mathrm{N}_2^{-}$have the same bond order
($D$) $\mathrm{He}_2^{+}$has the same energy as two isolated He atoms