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Elements #1
first 20 elements
| Question | Answer |
|---|---|
| Carbon | C |
| Hydrogen | H |
| Oxygen | O |
| Nitrogen | N |
| Sulfur | S |
| Iodine | I |
| Phosphorus | P |
| Fluorine | F |
| Helium | He |
| Neon | Ne |
| Aluminum | Al |
| Nickel | Ni |
| Calcium | Ca |
| Barium | Ba |
| Cobalt | Co |
| Lithium | Li |
| Boron | B |
| Uranium | U |
| Radium | Ra |