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Topic 22Chemistry

R3.4 Electron-Pair Sharing Reactions

Define nucleophiles and electrophiles, describe SN2 and electrophilic addition mechanisms, and at HL compare SN1/SN2, apply Markovnikov's rule, and explain electrophilic substitution of benzene.

Practice questions
1

Attack of the Lone PairSign up

Nucleophiles · Nucleophilic Substitution (SN2) · Heterolytic Fission

30 min
2

The Electron-Hungry SpeciesSign up

Electrophiles · Electrophilic Addition

30 min
3

Beyond Protons: The Lewis ModelHLSign up

Lewis Acids & Bases · Coordination Bonds · TM Complexes

30 min
4

One Step or Two?HLSign up

SN1 vs SN2 · Leaving Groups

30 min
5

Alkenes, Carbocations, and the Benzene RingHLSign up

Addition Reactions · Carbocation Stability · Electrophilic Substitution of Benzene

35 min

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R3.3 Electron Sharing Reactions