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Learning objective

Define nucleophile, electrophile and free radical.

Read the explanation, check the common trap, then practise with flashcards and questions.

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Topic

Introduction to organic chemistry

Subtopic

Isomerism and reaction mechanisms

Aqa A Level ChemistryOrganic chemistry

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Understand this objective

Quick explanation

Define nucleophile, electrophile and free radical

  • This point belongs to Introduction to organic chemistry, especially Isomerism and reaction mechanisms.
  • You need to be able to define nucleophile, electrophile and free radical.
  • The key ideas to know are free radical, electrophile, and nucleophile.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

free radicalelectrophilenucleophile

Why it matters

This objective helps connect Isomerism and reaction mechanisms to exam-style questions, flashcards, and revision notes for Introduction to organic chemistry.

Quick student answer

Which of the following best defines a nucleophile?

Direct answer

A species that donates an electron pair to form a bond.

Key terms

  • Nucleophile: A species that donates an electron pair to form a bond.
  • Electrophile: A species that accepts an electron pair to form a bond.

Common trap

Confusing nucleophiles and electrophiles: Remember that nucleophiles donate electron pairs, while electrophiles accept them.

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