Lakeland Electrons Review

1. Lakeland Electrons Review

2. Click on a question to begin

3. Question 1

4. Try Again • The question is asking about one orbital in the 4p sublevel. How many electrons can an orbital hold? Try Again

5. Correct! • A 4p orbital can hold 2 electrons. Every orbital can only hold a maximum of 2 electrons that spin in opposite directions. Next Question

6. Question 2

7. Try Again • The production of light occurs when an atom loses energy Try Again

8. Correct! • A line spectrum is created when the electrons of a metal salt fall from a high energy level to a low energy level. Next Question

9. Question 3

10. Try Again • Higher shells have higher amounts of energy. Try Again

11. Correct! • When electron falls from a higher shell to a lower shell there is a loss of energy Next Question

12. Question 4

13. Try Again • The outermost electrons are the electrons in the outermost s and p orbitals. Add up the total electrons in the outermost s and p orbitals to get the answer. Try Again

14. Correct! • Oxygen has 2 s electrons and 4 p electrons for a total of 6 electrons in its outermost level. Next Question

15. Question 5

16. Try Again • The s sublevel has 1 orbital and the p sublevel has 3 orbitals. Each orbital can hold up to 2 electrons. Try Again

17. Correct! • The p sublevel can hold 6 electrons while the s sublevel can hold only 2. Next Question

18. Question 6

19. Try Again • Add up the total number of electrons and then find the element with that atomic number. Try Again

20. Correct! • There are 7 total electrons. A neutral atom of nitrogen, with atomic number 7, would have 7 electrons in a neutral atom. Next Question

21. Question 7

22. Try Again • Review the definitions on your notes. Try Again

23. Correct! • The definition of an orbital is the region where an electron is most likely to be found. Next Question

24. Question 8

25. Try Again • C = wavelength x frequency Try Again

26. Correct! • 3 x 108 = (5.45 x 10-7)v v = 5.50 x 1014 Hz Next Question

27. Question 9

28. Try Again • The lowest frequency waves have the highest wavelength. Try Again

29. Correct! • Red light has the longest wavelength and lowest frequency. Next Question

30. Question 10

31. Try Again • The shortest wavelength waves have the highest frequency Try Again

32. Correct! • Gamma radiation has the highest frequency and lowest wavelength. Next Question

33. Question 11

34. Try Again • Electrons behave like a particle and wave, but only move like one of them. Try Again

35. Correct! • Electrons move like a wave, as all matter does. Next Question

36. Question 12

37. Try Again • Amplitude is the distance from the mid point to the highest or lowest point. Try Again

38. Correct! • B to C shows the distance from a crest to the midpoint. Next Question

39. Question 13

40. Try Again • Remember that electrons must have different spins to occupy the same orbital. Try Again

41. Correct! • An up and a down arrow represent two electrons spinning in opposite directions. Next Question

42. Question 14

43. Try Again • The kernel structure should have the last element in the row above, plus the valence shell of electrons. Make sure to have the proper number of electrons overall. Try Again

44. Correct! • The kernel structure is the ten electrons in Ne plus 7 more. [Ne]3s23p5 Next Question

45. Question 15

46. Try Again • E = hv Try Again

47. Correct! • E = (6.63 x 10-34)(5.78 x 1014) Next Question