MCQ
Which of the following reaction does not involve carbocation as an intermediate ?
- ✓$C{H_3} - CH = C{H_2}\,\xrightarrow[{{H_2}{O_2}}]{{HBr}}$
- B$C{H_3} - CH = C{H_2}\,\xrightarrow{{HCl}}$
- C

- D



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$(i)$ $C{H_3}\mathop {\mathop C\limits_{||} }\limits_O - {O^ - }$ $(ii)$ $C{H_3}{O^ - }$
$(iii)$ $C{N^ - }$ $(iv)$ $Image$
is
$3 s^{2}$; $3 s^{2} 3 p^{1}$; $3 s ^{2} 3 p ^{3}$; $3 s^{2} 3 p^{4}$
The correct order of first ionization enthalpy for them is.