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Organic Chemistry

Blazing goIITian

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20 Apr 2008 22:13:46 IST

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FIIT-JEE AIEEE Mock paper question

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FIIT-JEE AIEEE Mock paper question

Which is not an electrophile    ?

(A) CH3+      (B) Hg 2+
(C) NH4+      (D) BCl3

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Comments (5)

ultimator

Blazing goIITian

Joined: 27 Mar 2008

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20 Apr 2008 22:18:14 IST

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Can some1 give me the reason too ? it seems ans is (C), which i m not very sure of !

viswanath

Blazing goIITian

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20 Apr 2008 22:23:21 IST

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it cud be because NH4+ doesnt have any empty orbital.

sonirohitkumar

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Joined: 19 Dec 2006

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20 Apr 2008 22:25:32 IST

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an electropile ca accept lone pair of e-

in NH4+, N cannot accept lone pair hence its not an electrophile

aditya jain

Blazing goIITian

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20 Apr 2008 22:42:08 IST

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yaar look when it comes to the electrophile it is that , deficient of e- now the positive charge is because when H+ attacks the lone pair of nitrogen and it gets to form 4 bonds.

varsha valli g.

Blazing goIITian

Joined: 31 Jan 2007

Posts: 515

22 Apr 2008 10:43:42 IST

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yup its NH4+ .ts not that N is deficient of e- but has used its e to accept a H+. so it can regain its e- by releasing a H+.but the others r diff.BCl3 is a lewis acid.Hg2+ is stable in this config.CH3+ cannot accept e- due non availability of d orbitals in C.
!!!!!!!!!!!!!!!!!!!!!

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