IB Chemistry Sub-topic S2.1 Definitions
This page contains our IB Chemistry definitions for sub-topic S2.1. By learning each one of these definitions, you will fully cover the content for IB Chemistry 'Ionic bonds & structure'.
anion
Non-metals that gain valence electrons to gain a negative charge
cation
Positive ions. Commonly metals that lose valence electrons to gain a positive charge.
electronegativity
Relative measure of the attraction an atom has for a shared pair of electrons when covalently bonded to another atom
ionic bond
The electrostatic attraction between oppositely charged ions
Isoelectric
Atoms that have the same electron configuration
polyatomic ion
Ions formed from more than one element, often when an acid loses one of more hydrogen ions
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