IB Chemistry R3.4 Definitions

This page contains our IB Chemistry definitions for R3.4. By learning each one of these definitions, you will fully cover the content for IB Chemistry 'Electron-pair sharing'.
electrophile

A substance that is attracted to electrons

nucleophile

A substance that is attracted to nuclei

Explored IB Chemistry Definitions?

Get stuck into one of our other subjects!
Other subjects' Definitions
Join 85,000 students, across 130+ countries, in 500+ IB schools. That's half of the IB science graduates worldwide.
Start a 7d free trial