Chemistry / Chem 0291 · Atom · ~20 seconds
Covalent Bond
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A covalent bond is the attractive force between two positively charged nuclei and a shared pair of electrons positioned between.
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In a hydrogen molecule, H2, both hydrogen nuclei are held together by one electron pair shared between the two atoms.
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"Shared" does not mean split evenly in every case — later chapters cover how unevenly two atoms can share that pair.