Name: _______________________________________________ Date: __________ Period: _________ 3 Chemical Foundations and the Periodic Table (CHEMACTIVITY: Atoms, Ions, Isotopes) How does a knowledge of atomic structure serve as a foundation for the science of chemistry? 2 – Mastered 1 – Not Yet Mastered 0 - Incomplete 1. How many protons and electrons are present in a vanadium atom? 9. What is the name of the element that has atoms that contain 82 protons? 2. How many protons and electrons are present in a nitrogen atom? 10. What is the name of the element that has atoms that contain 92 protons? 3. How many protons and electrons are present in an argon atom? 11. Write the nuclear notation for the ion with 12 protons, 12 neutrons, and 10 electrons. 4. How many protons and electrons are present in a potassium atom? 12. Write the nuclear notation for the ion with 74 protons, 110 neutrons, and 68 electrons. 5. How many protons and electrons are present in a platinum atom? 13. Write the nuclear notation for the ion with 95 protons, 148 neutrons, and 89 electrons. 6. What is the name of the element that has atoms that contain 5 protons? 14. Write the nuclear notation for the ion with 33 protons, 43 neutrons, and 36 electrons. 7. What is the name of the element that has atoms that contain 17 protons? 15. Write the nuclear notation for the ion with 29 protons, 35 neutrons, and 27 electrons. 8. What is the name of the element that has atoms that contain 25 protons? 16. How many protons, neutrons, and electrons are present in the 59 Ni2+ ion? 28 17. How many protons, neutrons, and electrons 91 are present in the 40 Zr 4+ ion? 26. Which has more neutrons: 18. How many protons, neutrons, and electrons are present in the 140 Ce3+ ion? 58 27. Which has fewer electrons: 19. How many protons, neutrons, and electrons are present in the 79 Se2- ion? 34 28. Which of the following has the same number of electrons as 39 K1+ 19 140 58 27 13 40 20 20. How many protons, neutrons, and electrons are present in the 45 Sc 3+ ion? 21 22. How many protons, neutrons, and electrons are present in the 60 Ni atom? 28 23. How many protons, neutrons, and electrons are present in the 199 F atom? 24. How many protons, neutrons, and electrons are present in the 96 Mo atom? 42 25. How many protons, neutrons, and electrons are present in the 185 W atom? 74 Al3+ or Ca2+ or 132 54 35 17 Xe Cl1- 80 35 Br 1- 29. How many fewer neutrons are in in 21. How many protons, neutrons, and electrons are present in the 136 C4- ion? Ce3+ or 132 54 39 19 K1+ than Xe ? 30. What is the atomic mass number of an atom with 14 protons, 15 neutrons, and 17 electrons? 31. How many electrons have been gained in an 32 2S ion? 16 32. How many electrons have been lost in an 88 Sr 2+ ion? 38 33. For an atom of oxygen to be neutral it must have ___ protons and ____ electrons. 34. For an ion of nitrogen to have a charge of 3-, it must have ____ protons and ___ electrons.