Why do particular combinations of atoms hold together, but not others?
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Expert's answer
2015-03-03T10:51:04-0500
The atoms will be hold together when covalent or ionic/electrovalent bonds appear between them. Atoms, which share electrons in a chemical bound, have covalent bounds (for example, Oxygen O2). Ionic bound occur when electrons are donated from one atom to another (for example, NaCl).
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