The Atom
| __ | 1. | Argon has _ electrons | | A. | 39.9 | | __ | 2. | Argon has _ neutrons | | B. | 18 | | __ | 3. | Argon has _ protons | | C. | 40 | | __ | 4. | Atomic Mass of argon | | D. | 18 | | __ | 5. | Atomic Number of argon | | E. | 18 | | __ | 6. | Mass Number of argon | | F. | 22 | | __ | 7. | Symbol for argon | | G. | Ar |
| __ | 8. | atomic mass of iron | | A. | 26 | | __ | 9. | Atomic Number of iron | | B. | 56 | | __ | 10. | iron has _ electrons | | C. | 55.8 | | __ | 11. | iron has _ neutrons | | D. | 26 | | __ | 12. | iron has _ protons | | E. | 26 | | __ | 13. | mass number of iron | | F. | 30 | | __ | 14. | The symbol for iron | | G. | Fe |
| __ | 15. | atomic mass of potassium | | A. | 19 | | __ | 16. | Atomic Number of potassium | | B. | 39 | | __ | 17. | mass number of potassium | | C. | 19 | | __ | 18. | potassium has _ electrons | | D. | 19 | | __ | 19. | potassium has _ neutrons | | E. | 39.1 | | __ | 20. | potassium has _ protons | | F. | 20 | | __ | 21. | symbol for potassium | | G. | K |
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