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First 20elements(AM)
Atomic mass of the first 20 elements
| Question | Answer |
|---|---|
| Hydrogen | 1.01 |
| Helium | 4.00 |
| Lithium | 6.94 |
| Beryllium | 9.01 |
| Boron | 10.81 |
| Carbon | 12.01 |
| Nitrogen | 14.01 |
| Oxygen | 16.00 |
| Flourine | 19.00 |
| Neon | 20.18 |
| Sodium | 22.99 |
| Magnesium | 24.31 |
| Aluminum | 26.98 |
| Silicon | 28.09 |
| Phosphorus | 30.97 |
| Sulfur | 32.07 |
| Chlorine | 35.45 |
| Argon | 39.95 |
| Potassium | 39.10 |
| Calcium | 40.08 |