2. » 1. What is the atomic number of chlorine? » 2. What is the atomic mass of sodium? » 3. What is the mass number of the most common isotope of Silicon? Answer: 17 Answer: 22.99 amu Answer: 28

3. » 4. What term represents the protons + neutrons? » 5. What term represents the number of protons? » 6. What term represents the average mass of all of the isotopes? Answer: mass number Answer: atomic number Answer: average atomic mass

4. » 7. The average atomic mass of Potassium is 39.10 amu. Which isotope, K-39, K-40, or K-41 is the most abundant? » 8. When the mass number and atomic number is known, how does one find the number of neutrons? » 9. What is the mass of a proton? Answer: 39, because the atomic mass is closest to the most abundant isotope Answer: mass number minus atomic number Answer: 1 amu

5. » 10. What is the general formula for finding average atomic mass? » 11. Boron has two naturally occurring isotopes, B-10 (19.8% abundant) and B-11 (80.2% abundant). Calculate the atomic mass. » 12. Calculate the average atomic mass of Magnesium. Mg-24 (78.99%), Mg-25(10.00%), Mg-26 (11.01%). Answer: % x mass + % x mass….. Answer: 10.80 amu Answer: 24.32 amu

6. » 13. For Zn-64 what is the number of atomic number, mass number, number of protons, neutrons, and electrons? » 14. How many electrons has Mg 2 + lost from its original number? » 15. How many total electrons does Ca 2 + have? Answer: 30, 64, 30, 34, 30 Answer: 2 Answer: 18

7. » 16. An atom with the same number of protons, but a differing number of neutrons. » 17. What do the superscript and subscript from 40 19 K represent? » 18. Which family on the periodic table is in the first group? Answer: isotopes Answer: 40 is the mass number and 19 is the atomic number Answer: alkali metal

8. » 19. Which family of the periodic table has 8 valence electrons (except the top element)? » 20. Which section of the periodic table has properties of both metals and nonmetals? » 21. Which isotope of Neon has the same number of neutrons as it does protons? Answer: noble gases Answer: metalloids Answer: Ne-20

9. » 22. An atom becomes a cation, or positive, when… » 23. An atom becomes an anion, or negative, when… » 24. How many protons and neutrons does H+ have? Answer: it loses electrons Answer: it gains electrons Answer: 1 proton and 0 neutrons

10. » 25. Which scientist was a Greek philosopher and said that the atom was “indivisible”? » 26. Which scientist worked under E. Rutherford and discovered neutrons? » 27. Which scientist used the gold foil experiment and discovered that the atom was mostly empty space and the positive charges were located in the nucleus? Answer: Democritus Answer: Chadwick Answer: Rutherford

11. » 28. Which scientist was an English schoolteacher and said that atoms of the same element were exactly the same and that atoms of different elements combined together to form compounds? » 29. Which scientist thought that electrons were scattered around the atom like raisins in plum pudding? » 30. Which scientist thought that electrons orbited the nucleus in energy levels? Answer: Dalton Answer: Thomson Answer: Bohr

12. » 31. Which scientist used cathode rays to discover a subatomic particle? » 32. Which scientist used gold foil to discover subatomic particle placement? » 33. The lowest allowable energy state of an atom is the… Answer: Thomson Answer: Rutherford Answer: ground state

13. » 34. There are four types of orbitals, they are.. » 35. Which two families on the periodic table end in the configuration s 1 or s 2 ? » 36. Which block of the periodic table are the transition metals? Answer: s, p, d, f Answer: alkali metals and alkaline earth metals Answer: d

14. » 37. Which block of the periodic table are the lanthanide and actinide series’? » 38. How many total electrons can be placed into the p orbitals? » 39. How many total electrons can be placed into the d orbitals? Answer: f Answer: 6 Answer: 10

15. » 40. Which rule says that each electron occupies the lowest energy ? » 41. Which rule says that a maximum of 2 electrons may occupy a single atomic orbital, but only if the electrons have opposite spins. » 42. Which rule says that single electrons with the same spin must occupy each equal-energy orbital before additional electrons with opposite spins can occupy the same orbitals? Answer: Aufbau principle Answer: Hund’s Rule Answer: Pauli Exclusion Principle

16. » 43. What is the electron configuration of Sodium? » 44. What is the electron configuration of chlorine? » 45. What is the electron configuration of Iron? Answer: 1s 2 2s 2 2p 6 3s 1 Answer: 1s 2 2s 2 2p 6 3s 1 3p 6 Answer: : 1s 2 2s 2 2p 6 3s 1 3p 6 4s 2 3d 6

17. » 46. What is the noble gas configuration of Zirconium? » 47. What is the noble gas configuration of Terbium? » 48. What is the noble gas configuration of potassium? Answer: [Kr] 5s 2 4d 2 Answer:[Xe] 6s 2 5d 1 4f 8 Answer: [Ar] 4s 1