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According to the periodic table, which two elements have an atomic mass less than twice their atomic number? | Socratic
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Hydrogen Periodic Table Element Icon on White Background Stock Illustration - Illustration of element, number: 86915745
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Hydrogen big on periodic Table of the Elements with atomic number, symbol and weight with color delimitation on white background vector Stock Vector | Adobe Stock
![Hydrogen Periodic Table Element Icon on White Background Stock Illustration - Illustration of element, number: 86915745 Hydrogen Periodic Table Element Icon on White Background Stock Illustration - Illustration of element, number: 86915745](https://thumbs.dreamstime.com/b/hydrogen-periodic-table-element-icon-white-background-86915745.jpg)