What is the difference between 1.Allyl Halides and Allylic Halides 2.Benzyl Halides and Benzylic Halides And which of the two in both the cases shows Sn1 and Sn2?

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Q. Assertion:

1^{o}

allylic halides are more reactive than

1^{o} R X

S_{N} 1

reaction
Reason: Allylic carbocation intermediate is stabilised by resonance

Q. Assertion :Primary benzylic halides are more reactive than primary alkyl halides towards

S_{N} 1

reaction.
Reason: Reactivity depends upon the nature of the nucleophile and the solvent.

Name the following halides according to IUPAC system and classify them as alkyl, allyl, benzyl (primary, secondary, tertiary), vinyl or aryl halides :

$(C H_{3})_{2} C H C H (C l) C H_{3}$

$C H_{3} C H_{2} C H (C H_{3}) C H (C_{2} H_{5}) C l$

$C H_{3} C H_{2} C (C H_{3})_{2} C H_{2} I$

$(C H_{3})_{3} C C H_{2} C H) (B r) C_{6} H_{5}$

$C H_{3} C H (C H_{3}) C H (B r) C H_{3}$

$C H_{3} C (C_{2} H_{5})_{2} C H_{2} B r$

$C H_{3} C (C l) (C_{2} H_{5}) C H_{2} C H_{3}$

$C H_{3} C H = C (C l) C H_{2} C H (C H_{3})_{2}$

$C H_{3} C H = C H C (B r) (C H_{3})_{2}$

$p - C l C_{6} H_{4} C H_{2} C H (C H_{3})_{2}$

$m - C l C H_{2} C_{6} H_{4} C H_{2} C (C H_{3})_{3}$

$o - B r - C_{6} H_{4} C H (C H_{3}) C H_{2} C H_{3}$

Q. The correct order of reactivity of the halides,
(I) ethyl chloride; (II) isopropyl chloride and (III) benzyl chloride in

S_{N} 1

reaction is:

Q. Which of the following compounds can be classified as allylic halides?

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