.28 When an electron falls from one energy level to a lower energy level, the re
ID: 530970 • Letter: #
Question
.28 When an electron falls from one energy level to a lower energy level, the result is the emission of a) a beta particle. b) quantized energy. c) a gamma particle. d) gamma radiation. .29 in the third principal energy level, which sublevel contains electrons with the greatest energy? d)3s b) 3f a) 3d .30 How many orbitals are contained in the 2p sublevel? a) 1 b) 2 c) 3 d) 4 .31 Atoms of which element has the following electron configuration? 1s2 2s2 2p 3s1 a) sulfur b) strontium c) sodium d) nitrogen .32 How many unpaired electrons correspond to the ground state of nitrogen c) 2 a) 0 b) 1 d) 3 -33 on the periodic table, elements that behave in a similar manner are found in the same a) series. d) period. b) row. c) group. .34 on the periodic table, elements in the same group contain the same number of a) protons b) electrons. c principal energy levels in their ground state. d) valence electrons in their ground state. .35 Which of the following elements has the greatest number of unpaired electrons in its ground state electron configuration? a) C b) O c) N d) FExplanation / Answer
28. (b) quantised energy
29. (a) 3d
30. (c) 3
31. (c) sodium
32. (d) 3
33. (c) Group
34. (d) valence electrons in their ground state
35. (c) N - 3
36. (a) d - orbital - double dumbbell shape
37. (a) TRUE - Paulis' priciple
38. (a) TRUE - Moiler diagram
39. (a) TRUE
40. (c)
41. (a) with zero formal charge
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