Define nucleophile, electrophile and free radical.

In the subtopic Isomerism and reaction mechanisms, this AQA A-Level Chemistry 7405 learning objective focuses on define nucleophile, electrophile and free radical. It belongs to Introduction to organic chemistry, so revision should stay anchored to this exact subtopic rather than drifting into a generic GCSE-level chemistry summary. Approved keywords to use include free radical, electrophile, nucleophile. Electrophile. means an electrophile is a species that accepts an electron pair from a nucleophile to form a chemical bond Avoid the mistake of students often confuse nucleophiles with electrophiles, thinking both are electron donors; instead, remember that nucleophiles are electron-rich species that donate electrons, while electrophiles are electron-deficient species that accept electrons. A nucleophile can be defined as a species that has a lone pair of electrons or a negative charge, whereas an electrophile is typically positively charged or has a partial positive charge For exam answers, clearly define nucleophiles and electrophiles in your answers. Remember, nucleophiles donate electron pairs, while electrophiles accept them