CLASS 8 · LEARNING KNOWLEDGE
Ions and ionic bonding – basic principles
How it works
Ions are electrically charged particles that are formed by the uptake or loss of electrons. Metals usually give up electrons and become positively charged cations, non-metals take up electrons and become negatively charged anions. Ionic bonding is a chemical bond in which oppositely charged ions connect to form an ion lattice due to their electrostatic attraction. Typical ionic bonds form between metals and non-metals, e.g. in sodium chloride (NaCl).
Note
Ions form through electron transfer; cations are positive, anions are negative. Ionic bonds form through the electrostatic attraction between cations and anions, usually between metal and non-metal ions.
Ions form through electron transfer; cations are positive, anions are negative. Ionic bonds form through the electrostatic attraction between cations and anions, usually between metal and non-metal ions.
An example
Which particle is formed when a sodium atom gives up an electron?
A sodium ion (Na⁺) is formed, because the atom gives up an electron and thus becomes positively charged.
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50 Exercises
To the learning unit →Own explanation and own practice exercises by AmyMath. Subject reference framework: Chemistry. The topic assignment may vary by federal state.