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30 Elements
| Element | Symbol |
|---|---|
| Hydrogen | H |
| Helium | He |
| Neon | Ne |
| Argon | Ar |
| Krypton | Kr |
| Xenon | Xe |
| Oganesson | Og |
| Lithium | Li |
| Sodium | Na |
| Potassium | K |
| Rubidium | Rb |
| Cesium | Cs |
| Francium | Fr |
| Beryllium | Be |
| Calcium | Ca |
| Strontium | Sr |