Chemistry / Unit 6 Chem 0969 short lesson, about 20 seconds
Covalent Bond Formation
Captions available
The idea
A covalent bond forms when two atoms share a pair of electrons, each atom counting that pair toward its own valence shell.
In practice
Two hydrogen atoms each contribute one electron to a shared pair, forming the covalent bond in H2.
Where people slip
Covalent sharing differs from ionic transfer: both atoms keep a claim on the electrons rather than one losing them.
Your place on the trail
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