For the following reaction
`CH_(3)ClrarrCH_(3)^(oplus)+Cl^(Θ),DeltaH_(1)^(@)`
`CH_(3)CH_(2)ClrarrCH_(3)CH_(2)^(+)+Cl^(Θ),DeltaH_(2)^(@)`
`(CH_(3))_(2)CHClrarr(CH_(3))_(2)CH^(+)+Cl^(Θ),DeltaH_(3)^(@)`
`(CH_(3))_(3)C"C"lrarr(CH_(3))_(3)C^(+)+Cl^(-),DeltaH_(4)^(@)`
The correct order of enthalpies of ionization is

Options

A. `DeltaH_(1)^(@)gtDelta_(2)^(@)gtDeltaH_(3)^(@)gtDeltaH_(4)^(@)`
B. `DeltaH_(1)^(@)ltDelta_(2)^(@)ltDeltaH_(3)^(@)ltDeltaH_(4)^(@)`
C. `DeltaH_(1)^(@)gtDelta_(2)^(@)gtDeltaH_(3)^(@)ltDeltaH_(4)^(@)`
D. `DeltaH_(1)^(@)ltDelta_(2)^(@)ltDeltaH_(3)^(@)ltDeltaH_(4)^(@)`

Answer

A

Explanation

Smaller the value of `DeltaH`. more stable is the carbocation. Stability of carbocation follows the order `3^(@)gt2^(@)gt1^(@)gtCH_(3)^(+)." the order of "DeltaH" values is "DeltaH_(1)^(@)gtDeltaH_(2)^(@)gtDeltaH_(4)^(@)`.