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An organic reaction occurs by using reag...

An organic reaction occurs by using reagents called electrophiles and nucleophiles via the formation of some reactive intermediates called carbocations, carbanions, free radicals, carbenes, nitrenes, radical cations, and radical anions.
Which of the following contains nucleophiles only ?

A

`PH_3, ROH, CH_2= CH_2`

B

`SnF_4, BeF_2, NH_3`

C

`Cr^(3 +), overset (Ө) N H_2, H_2 O`

D

`: C Cl_2, I^(Ө), H^(Ө)`

Text Solution

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The correct Answer is:
A
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Knowledge Check

  • An organic reaction occurs by using reagents called electrophiles and nucleophiles via the formation of some reactive intermediates called carbocations, carbanions, free radicals, carbenes, nitrenes, radical cations, and radical anions. Which of the following contains electrophiles only ?

    A
    `Br^(oplus), PH_3, H_2O`
    B
    `NO_2^(oplus), : CBr_2, SO_3`
    C
    `NH_3,H_2 O, A1 Br_3`
    D
    `A1C1_3, CH_2=CH_2,SO_3`

  • An organic reaction occurs by using reagents called electrophiles and nucleophiles via the formation of some reactive intermediates called carbocations, carbanions, free radicals, carbenes, nitrenes, radical cations, and radical anions. The most stable free radical is :

    A
    `PhCH_2 dot C H_2`
    B
    `Me dot CH_2`
    C
    `Me_2 dot CH`
    D
    `Ph dot C HMe`

  • An organic reaction occurs by using reagents called electrophiles and nucleophiles via the formation of some reactive intermediates called carbocations, carbanions, free radicals, carbenes, nitrenes, radical cations, and radical anions. The most stable carbanion is :

    A
    `PhCH_2 overset (Ө) CH_2`
    B
    `Ph overset (Ө) CH_2`
    C
    D

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    Passage Organic compounds mainly consist of covalent bonds. The electron pair in these covalent bonds may undergo displacement either of their own or under the influence of other species. The cleavage of covalent bond between two atoms takes place in homolytic or heterolytic fashion. The homolytic fission results into free radicals while heterolytic fission results into carbocations and carbanions. These are also called reaction intermediates and are attacked by electrophiles and nucleophiles. The electrophiles seek electron rich sites while nucleophiles seek electron deficient sites. Answer the followings Questions : Which of the following series contain only nucleophiles:

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