Chemistry 9701 · AS & A Level · Chemical bonding

Chemical bonding — practice question

The formula $\text{CH}_3$ may denote an anion, a cation or a free radical. A species with molecular formula $\text{CH}_3$ can behave as an electrophile, a free radical or a nucleophile, depending on how many outer shell electrons the central carbon atom has. How many outer shell electrons are needed for $\text{CH}_3$ to behave in each of these ways?

  • Aelectrophile: 6, free radical: 7, nucleophile: 8
  • Belectrophile: 6, free radical: 8, nucleophile: 7
  • Celectrophile: 7, free radical: 6, nucleophile: 8
  • Delectrophile: 8, free radical: 7, nucleophile: 6

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