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chem elements #1-20
periodic table #1-20
| Question | Answer |
|---|---|
| 1. Hydrogen | H |
| 2. Helium | He |
| 3.Lithium | Li |
| 4. Beryllium | Be |
| 5. Boron | B |
| 6. Carbon | C |
| 7. Nitrogen | N |
| 8. Oxygen | O |
| 9. Fluorine | F |
| 10. Neon | Ne |
| 11. Sodium | Na |
| 12. Magnesium | Mg |
| 13.Aluminum | Al |
| 14. Silicon | Si |
| 15. Phosphorus | P |
| 16. Sulfur | S |
| 17. Chlorine | Cl |
| 18. Argon | Ag |
| 19. Potassium | K |
| 20. Calcium | Ca |