2. Half- LifeWavesImportant People Pauli excludes who? Isotopes or Quantum 2 4 2 8 6 4 10 8 6 2 4 8 6 2 4 8 6 2 8 6 4

3. How long would it take for a sample of plutonium-244 (half- life 6.7 years) to decay from 50 grams to 5 grams? 5.0 years 22 years 32 years 2.5 years

4. What is the nuclear equation for the alpha decay of plutonium- 248? 248 94 Pu → 4 2 He + 1 0 n 4 2 He + 248 94 Pu → 252 96 Cm 248 94 Pu → 4 2 He + 248 94 Pu 248 94 Pu → 4 2 He + 244 92 U

5. List the types of radiation from weak to strong Alpha, gamma, beta Beta, gamma, alpha Alpha, beta, gamma Nuclide

6. Which of the following is an alpha particle? 10n10n 11p11p 42α42α 0 ϐ

7. If a beta decay occurs, what side of the reaction would the beta particle be? products reactants superscript coefficients

8. Of the following, which color from visible light has the highest frequency? blue green yellow indigo

9. Blue light has a frequency ___________ that of green light Equal to Less than Greater than None of these

10. If the frequency increases, the wavelength….. Stays the same Decreases Increases Interferes

11. If given the wavelength of a photon and asked for the frequency, which equation would you use? E=hc/λ E=hf c= λf 6.626 x 10 -34

12. What are the units for energy? Hertz Meters Joules Seconds

13. This scientist put the periodic table in order by atomic mass Dalton Moseley Bohr Mendeleev

14. This scientists is accredited with determining the shapes of the orbitals which has been adopted today Bohr Pauli Schrodinger Rutherford

15. This scientist coined the term “atomos” Democritus Aristotle Pauli Heisenberg

16. Which scientist was noticed for his cathode-ray tube which led to the discovery of the electron Millikan J.J. Thompson Rutherford Moseley

17. Which of the following suggests that orbitals must be half-way filled before they can be filled completely? Pauli Exclusion Principle Hund’s Rule Aufbau Principle Heinsenberg Uncertainty Principle

18. What is the electron configuration of carbon? 1s 2 2s 2 2p 6 1s 2 2s 2 2p 2 1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 4p 6 1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 3d 10 4p 6

19. Which of the following ground- state electron configurations is correctly written? 1s 2 2s 2 2p 6 3s 2 3d 10 1s 2 2s 2 2p 7 3s 2 1s 2 2s 2 1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 4p 6

20. What is the noble gas notation of Yttrium? [Xe] [Kr] 5s 2 5d 1 [Xe] 5s 2 4d 1 [Kr]5s 2 4d 1

21. What would be the atomic number of the element that completely fills the 7p sublevel? 112 118 120 134

22. An atom containing 12 protons, 12 neutrons, and 10 electrons, and a second atom containing 12 protons, 12 neutrons, and 12 electrons are Ions of the same element Isotopes Different elements Atoms of the same element with different mass numbers

23. Which one of the following is a possible set of quantum numbers for a 4f electron 4, 2, 2, +1/2 4, 3, 3, +1/2 4, 2, 1, -1/2 4, 3, 4, -1/2

24. Which of the following statements about “p” orbitals is false? They are degenerate (have the same energy) The have a value of l=1 They are located on every energy level The shape of the electron-density probability resembles a double-lobed region

25. Isotopes have a different number of ….. Neutrons Protons Electrons Ions

26. Potassium-41 has …. 19 Protons, 19 Neutrons, and 41 Electrons 19 Protons, 19 Neutrons, and 22 Electrons 19 Protons, 22 Neutrons, and 19 Electrons 19 Protons, 19 Neutrons, and 19 Electrons

27. In a neutral atom, the number of protons equals the number of… neutrons neutrons plus electrons neutrons minus electrons electrons