Chemistry › Section G · Chemical bonding and molecular geometry › Topic G.2
Covalent bonding and electronegativity
When two atoms both hold on to their electrons tightly, neither gives one up; instead they share. How evenly they share depends on electronegativity, one number per element that predicts which end of a bond carries a slight negative charge.
In this topic
- Sharing instead of transferring
- How a bond forms
- Properties of molecular substances
- Pure and polar covalent bonds
- Electronegativity
- Electronegativity is not electron affinity
- Bond type from electronegativity difference
- Worked example: the hydrogen halides
- Worked example: classifying bonds
- Common mistakes to avoid
- Key takeaways
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