There is one lone pair present in H3O+, it cannot act as a(n)?
Correct answer: C. Nucleophile
- A. Electrophile
- B. Lewis acid
- C. Nucleophile
- D. Strong acid
Explanation
Option C is correct since H3O+ has a lone pair of electrons, but due to the presence of a positive charge, it can't donate its electron pair. Hence it doesn't act as a nucleophile. Option A is incorrect since H3O+ can donate H+ ion to nucleophiles by accepting a pair of electrons and therefore, act as an electrophile. Option B is incorrect since it states that H3O+ is a lewis acid, which is not the case because, to be a lewis acid, the species must accept an electron pair. The octet of oxygen and the duplet of hydrogen is fulfilled so it cannot accept a pair of electrons. Option D is incorrect since H3O+ is not a very strong acid.
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About Alkyl Halides
Alkyl halides are named and related to their carbon-halogen structure, polarity and reactivity. The key reactions are nucleophilic substitution by SN1 and SN2 mechanisms and elimination by E1 and E2 mechanisms, including how substrate structure, nucleophile, base, solvent and temperature influence substitution versus elimination.
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