Chemistry / Chem 0995 · Atom · ~20 seconds
Incomplete Octet
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An incomplete octet occurs when a stable Lewis structure leaves a central atom, typically beryllium or boron, with under eight electrons.
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In BF3, boron forms three single bonds and holds no lone pair, stable with only six electrons around it.
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An incomplete octet is a recognized outcome for a few light central atoms, not a sign the structure is wrong.
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