Chemistry / Unit 2 Chem 0291 short lesson, about 20 seconds
Covalent Bond
Captions available
The idea
A covalent bond is the attractive force between two positively charged nuclei and a shared pair of electrons positioned between.
In practice
In a hydrogen molecule, H2, both hydrogen nuclei are held together by one electron pair shared between the two atoms.
Where people slip
"Shared" does not mean split evenly in every case — later chapters cover how unevenly two atoms can share that pair.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
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