Heterolytic fission of a covalent bond produces
Correct answer: C. a positive and a negative ion, because both electrons go to one atom
- A. two free radicals
- B. two neutral atoms
- C. a positive and a negative ion, because both electrons go to one atom
- D. no change in the molecule
Explanation
In heterolytic fission the shared pair leaves with the more electronegative atom, giving oppositely charged ions such as a carbocation and a halide, and this is typical of polar solvents and ionic mechanisms. Homolytic fission splits the pair evenly and gives two free radicals, which is what happens under ultraviolet light or high temperature. Recognising which type a reaction uses is the key to predicting its mechanism.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
About Classification of Organic Compounds
Organic compounds are classified by carbon skeleton into open-chain, branched-chain and cyclic compounds, including homocyclic and heterocyclic types. The classification also uses functional groups to distinguish hydrocarbons, halo compounds, alcohols, aldehydes, ketones, carboxylic acids and their derivatives, which is different from naming compounds by IUPAC rules.
Practise Fundamental Principles of Organic Chemistry
536 free Fundamental Principles of Organic Chemistry MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Chemistry questions like this
Chemistry is on 14 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.