MCQ
The propene reacts with $HBr$ to form
- AEthane
- BHexane
- C$1-$bromo-propane
- ✓$2-$bromo propane
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$3 s^{2}$; $3 s^{2} 3 p^{1}$; $3 s ^{2} 3 p ^{3}$; $3 s^{2} 3 p^{4}$
The correct order of first ionization enthalpy for them is.