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40 elements
| Question | Answer |
|---|---|
| Hydrogen | 1 H 1 |
| Helium | 2 He 18 |
| Lithium | 3 Li 1 |
| Beryllium | 4 Be 2 |
| Boron | 5 B 13 |
| Carbon | 6 C 14 |
| Nitrogen | 7 N 15 |
| oxygen | 8 O 16 |
| Fluorine | 9 F 17 |
| Neon | 10 Ne 18 |
| Sodium | 11 Na 1 |
| Magnesium | 12 Mg 2 |
| Aluminum | 13 Al 13 |
| Silicon | 14 Si 14 |
| Phosphorus | 15 P 15 |
| Sulfur | 16 S 16 |
| Chlorine | 17 Cl 17 |
| Argon | 18 Ar 18 |
| Potassium | 19 K 1 |
| Calcium | 20 Ca 2 |
| Scandium | 21 Sc 3 |
| Titanium | 22 Ti 4 |
| Vanadium | 23 V 5 |
| Chromium | 24 Cr 6 |
| Manganese | 25 Mn 7 |
| Iron | 26 Fe 8 |
| Cobalt | 27 Co 9 |
| Nickel | 28 Ni 10 |
| Copper | 29 Cu 11 |
| Zinc | 30 Zn 12 |
| Gallium | 31 Ga 13 |
| Germanium | 32 e 14 |
| Arsenic | 33 Ar 15 |
| Selenium | 34 Se 16 |
| Bromine | 35 Br 17 |
| Krypton | 36 Kr 18 |
| Rubidium | 37 Rb 1 |
| Strontium | 38 Sr 2 |
| Yttrium | 39 Y 3 |
| Zirconium | 40 Zr 4 |