AP Chem Unit 7

Daily 1 Answer Key

1. A
2. D
3. C
4. B
5. A
6. C
7. C
8. A
9. A
10. D
11. B
12. A
13. C
14. A
15. B
16. B
17. D
18. B
19. A
20. B
21. A
22. 7.5 x 10¹⁴s^-1 to 4.3 x 10¹⁴s^-1
23. Figure 7.2 in textbook
24. 6.7 x 10¹⁴ Hz
25. 5.3 x 10^-7 m
26. a. 4.469 x 10¹⁴s^-1 b. 2.961 x 10^-19 J, 178.3 kJ
27. 29.6 nm
28. 3.49 x 10^-20
29. 1.4 x 10^-37 m
30. a. 3.3 x 10^-14 m b. 2.4 x 10^-38 m
31. 6.817 x 10^-8 m
32. 486 nm
33. ultraviolet
34. visible
35. C
36. a. 32 electrons b. 14 electrons c. 18 electrons
37. Ca: 1s²2s²2p⁶3s²3p⁶4s²
38. Barium has the same number of valence electrons and therefore similar chemical properties as calcium. Ba = (Xe) 6s²; Ca = (Ar) 4s².
39. X = bromine
40. 6s
41. VIII A (noble gases); periods I and II.
42. a. K⁺, Ar, Cl^-, S^2- b. F, C, Si, Al c. Ar, P, Mg, Na d. Ba²⁺, Cs⁺, Xe, I^-
43. Mg< Ca< Ga< In< Te< Xe
44. a. C, Ge b. Cl⁺, Cl^-
45. Examples are reaction with water to give bases, and metallic character among others.