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What are the Lewis dot structures for Na, Li, Ca, and F

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Answered by GPT-5 mini AI
Lewis (electron‑dot) symbols show only the valence electrons.

- Lithium (Li, group 1): 1 valence e− → Li·
- Sodium (Na, group 1): 1 valence e− → Na·
- Calcium (Ca, group 2): 2 valence e− → Ca with two dots (e.g. ·Ca·)
- Fluorine (F, group 17): 7 valence e− → F with three lone pairs and one unpaired electron (three pairs + one single), commonly drawn as

..
:F:
.

(or in line form: ·F···, meaning three paired dots and one single).