MCQ
The $3^{rd}$ ionisation energy amongst $Li, Be, B$ and $C$ is lowest for
- A$Li$
- B$Be$
- ✓$B$
- D$C$
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$C{H_2} = C{H_2}\xrightarrow{{HBr}}X\xrightarrow{{{\text{Hydrolysis}}}}Y\mathop {\xrightarrow{{N{a_2}C{O_3}}}}\limits_{{I_2}{\text{ excess}}} Z$