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Writing Electron Configurations Using Core Notation Part 1 Introducing Core Notations.

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1 Writing Electron Configurations Using Core Notation Part 1 Introducing Core Notations

2 Writing Electron Configurations Using Core Notation Part 1 Introducing Core Notations

3 Energy  Ne

4 Energy  Noble Gas Ne (10 e – ) Ne

5 Energy       Noble Gas Ne (10 e – ) Ne

6 Energy       Noble Gas Ne (10 e – ) 1s 2 2s 2 2p 6 Ne

7 Energy  Na Ne

8 Energy  Na (11 e – ) Ne

9 Energy   Na (11 e – )      Ne

10 Energy   Na (11 e – ) 1s 2 2s 2 2p 6 3s 1      Ne

11 Energy   Na (11 e – ) 1s 2 2s 2 2p 6 3s 1     Ne 

12 Energy   Na (11 e – ) 1s 2 2s 2 2p 6 3s 1     Ne 

13 Energy   Na (11 e – ) 1s 2 2s 2 2p 6 3s 1     Ne  The Noble Gas Core

14 Energy   Na (11 e – ) 1s 2 2s 2 2p 6 3s 1     Ne  The Noble Gas Core

15 Energy   Na (11 e – ) 1s 2 2s 2 2p 6 3s 1     Ne  The Noble Gas Core

16 Energy   Na (11 e – ) 1s 2 2s 2 2p 6 3s 1     Ne  The Outer Configuration

17 Energy   Na (11 e – ) 1s 2 2s 2 2p 6 3s 1     Ne  The Outer Configuration

18 Energy   Na (11 e – ) 1s 2 2s 2 2p 6 3s 1     Ne  The Outer Configuration

19 Energy   Na (11 e – ) 1s 2 2s 2 2p 6 3s 1     Ne  The Noble Gas Core

20 Energy   Na (11 e – ) 1s 2 2s 2 2p 6 3s 1     Ne  The Noble Gas Core

21 Energy   Na (11 e – ) 1s 2 2s 2 2p 6 3s 1     Ne  The Noble Gas Core

22 Energy   Na (11 e – ) [Ne] 3s 1     Ne  The Noble Gas Core

23 Energy   Na (11 e – ) [Ne] 3s 1     Ne  The Noble Gas Core

24 Energy   Na (11 e – ) [Ne] 3s 1     Ne 

25 Energy   Na (11 e – ) [Ne] 3s 1     Ne  The Noble Gas Core Configuration for Na

26 Energy   Na (11 e – ) [Ne] 3s 1     Ne  Core The Noble Gas Core Configuration for Na

27 Energy   Na (11 e – ) [Ne] 3s 1     Ne  Outer configuration

28 Energy   Na (11 e – ) [Ne] 3s 1     Ne  valence electrons

29 Energy   Na (11 e – ) [Ne] 3s 1     Ne  1 valence electron

30 Energy   Na (11 e – ) [Ne] 3s 1     Ne  1 valence electron

31 Ne (10 e – )

32 Ne (10 e – ) 1s 2 2s 2 2p 6

33 Na (11 e – )

34 Na (11 e – ) [Ne] 3s 1

35

36

37 3s 1

38 Mg (12 e – )

39 Energy   Mg (12 e – )     Ne 

40 Energy   Mg (12 e – ) 1s 2 2s 2 2p 6 3s 2     Ne 

41 Energy   Mg (12 e – ) 1s 2 2s 2 2p 6 3s 2     Ne  The Noble Gas Core

42 Energy   Mg (12 e – ) 1s 2 2s 2 2p 6 3s 2     Ne  The Noble Gas Core

43 Energy   Mg (12 e – ) [Ne] 3s 2     Ne  The Noble Gas Core

44 Energy   Mg (12 e – ) [Ne] 3s 2     Ne  The Outer Configuration

45 Mg (12 e – ) [Ne] 3s 2

46

47 3s 2

48 3s 1

49 3s 2 3s 1

50 3s 2 3s 1

51 Energy   Al (13 e – )     Ne  

52 Energy   Al (13 e – ) 1s 2 2s 2 2p 6 3s 2 3p 1     Ne  

53 Energy   Al (13 e – ) 1s 2 2s 2 2p 6 3s 2 3p 1     Ne   The Noble Gas Core

54 Energy   Al (13 e – ) [Ne] 3s 2 3p 1     Ne   The Noble Gas Core

55 Energy   Al (13 e – ) [Ne] 3s 2 3p 1     Ne   The Outer Configuration

56 3s 2 3s 1 Al (13 e – ) [Ne] 3s 2 3p 1 Core

57 3s 2 3s 1 3s 2 3p 1 Al (13 e – ) [Ne] 3s 2 3p 1 Outer configuration

58 Energy   Si (14 e – ) [Ne] 3s 2 3p 2     Ne   The Outer Configuration 

59 3s 2 3s 1 3s 2 3p 2 Si (14 e – ) [Ne] 3s 2 3p 2 Outer configuration

60 Energy   P (15 e – ) [Ne] 3s 2 3p 3     Ne   The Outer Configuration 

61 3s 2 3s 1 3s 2 3p 3 Si (14 e – ) [Ne] 3s 2 3p 2 Outer configuration

62 Energy   Ar (18 e – ) [Ne] 3s 2 3p 6     Ne   The Outer Configuration  

63 3s 2 3s 1 3s 2 3p 6 Ar (18 e – ) [Ne] 3s 2 3p 6 Outer configuration

64 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 1 2 3 4 21131415161718 Just the ending of the configuration

65 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 1 2 3 4 21131415161718 Just the ending of the configuration

66 Writing Electron Configurations Using Core Notation Part 2 Writing a Core Notation Using the Periodic Table

67 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 1 2 3 4 21131415161718

68 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 1 2 3 4 21131415161718

69 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 1 2 3 4 21131415161718 Cl (17 e – ) [Ne]

70 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 1 2 3 4 21131415161718

71 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 1 2 3 4 21131415161718

72 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 1 2 3 4 21131415161718

73 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 1 2 3 4 21131415161718

74 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 1 2 3 4 21131415161718

75 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 1 2 3 4 21131415161718

76 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 What is the core notation for chlorine? 1 2 3 4 21131415161718

77 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 Cl What is the core configuration for chlorine? 1 2 3 4 21131415161718

78 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 Cl (17 e – ) What is the core configuration for chlorine? 1 2 3 4 21131415161718

79 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 Cl (17 e – ) What is the core configuration for chlorine? 1 2 3 4 21131415161718

80 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 Cl (17 e – ) [Ne] 10 e – 1 2 3 4 21131415161718

81 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 Cl (17 e – ) [Ne] 3s 2 10 e – 2 e – 1 2 3 4 21131415161718

82 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 Cl (17 e – ) [Ne] 3s 2 10 e – 2 e – 5 e – 1 2 3 4 21131415161718

83 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 Cl (17 e – ) [Ne] 3s 2 3p 5 5 e – 10 e – 2 e – 1 2 3 4 21131415161718

84 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 Cl (17 e – ) [Ne] 3s 2 3p 5 1 2 3 4 21131415161718

85 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 1 2 3 4 21131415161718

86 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 1 2 3 4 21131415161718

87 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 2s 2 2s 1 1 2 3 4 21131415161718

88 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 2s 2 2s 1 2p 6 2p 5 2p 4 2p 3 2p 2 2p 1 1 2 3 4 21131415161718

89 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 2s 2 2s 1 2p 6 2p 5 2p 4 2p 3 2p 2 2p 1 1 2 3 4 21131415161718 N (7 e – )

90 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 2s 2 2s 1 2p 6 2p 5 2p 4 2p 3 2p 2 2p 1 1 2 3 4 21131415161718 N (7 e – ) [He]

91 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 2s 2 2s 1 2p 6 2p 5 2p 4 2p 3 2p 2 2p 1 1 2 3 4 21131415161718 N (7 e – ) [He] 2s 2

92 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 2s 2 2s 1 2p 6 2p 5 2p 4 2p 3 2p 2 2p 1 1 2 3 4 21131415161718 N (7 e – ) [He] 2s 2 2p 3

93 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 2s 2 2s 1 2p 6 2p 5 2p 4 2p 3 2p 2 2p 1 1 2 3 4 21131415161718

94 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 2s 2 2s 1 2p 6 2p 5 2p 4 2p 3 2p 2 2p 1 1 2 3 4 21131415161718 4s 2 4s 1 4p 6 4p 5 4p 4 4p 3 4p 2 4p 1

95 Fill up the 3d orbitals 1 2 3 4 21131415161718

96 Fill up the 3d orbitals 1 2 3 4 21131415161718 3d 6 3d 5 3d 4 3d 3 3d 2 3d 1 3d 7 3d 8 3d 9 3d 10

97 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 2s 2 2s 1 2p 6 2p 5 2p 4 2p 3 2p 2 2p 1 1 2 3 4 21131415161718 4s 2 4s 1 4p 6 4p 5 4p 4 4p 3 4p 2 4p 1 3d 6 3d 5 3d 4 3d 3 3d 2 3d 1 3d 7 3d 8 3d 9 3d 10 n = 4

98 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 2s 2 2s 1 2p 6 2p 5 2p 4 2p 3 2p 2 2p 1 1 2 3 4 21131415161718 4s 2 4s 1 4p 6 4p 5 4p 4 4p 3 4p 2 4p 1 3d 6 3d 5 3d 4 3d 3 3d 2 3d 1 3d 7 3d 8 3d 9 3d 10 n = 4 ns 1 & ns 2

99 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 2s 2 2s 1 2p 6 2p 5 2p 4 2p 3 2p 2 2p 1 1 2 3 4 21131415161718 4s 2 4s 1 4p 6 4p 5 4p 4 4p 3 4p 2 4p 1 3d 6 3d 5 3d 4 3d 3 3d 2 3d 1 3d 7 3d 8 3d 9 3d 10 n = 4 ns 1 & ns 2 np 1 to np 6

100 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 2s 2 2s 1 2p 6 2p 5 2p 4 2p 3 2p 2 2p 1 1 2 3 4 21131415161718 4s 2 4s 1 4p 6 4p 5 4p 4 4p 3 4p 2 4p 1 3d 6 3d 5 3d 4 3d 3 3d 2 3d 1 3d 7 3d 8 3d 9 3d 10 n = 4 ns 1 & ns 2 np 1 to np 6 (n-1)d 1 to (n-1)d 10

101 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 2s 2 2s 1 2p 6 2p 5 2p 4 2p 3 2p 2 2p 1 1 2 3 4 21131415161718 4s 2 4s 1 4p 6 4p 5 4p 4 4p 3 4p 2 4p 1 3d 6 3d 5 3d 4 3d 3 3d 2 3d 1 3d 7 3d 8 3d 9 3d 10 n = 4 4s 1 & 4s 2 4p 1 to 4p 6

102 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 2s 2 2s 1 2p 6 2p 5 2p 4 2p 3 2p 2 2p 1 1 2 3 4 21131415161718 4s 2 4s 1 4p 6 4p 5 4p 4 4p 3 4p 2 4p 1 3d 6 3d 5 3d 4 3d 3 3d 2 3d 1 3d 7 3d 8 3d 9 3d 10 n = 4 3d 1 to 3d 10

103 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 2s 2 2s 1 2p 6 2p 5 2p 4 2p 3 2p 2 2p 1 1 2 3 4 21131415161718 4s 2 4s 1 4p 6 4p 5 4p 4 4p 3 4p 2 4p 1 3d 6 3d 5 3d 4 3d 3 3d 2 3d 1 3d 7 3d 8 3d 9 3d 10 n = 5 (n-1)d 1 to (n-1)d 10 ns 1 & ns 2 np 1 to np 6 5

104 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 2s 2 2s 1 2p 6 2p 5 2p 4 2p 3 2p 2 2p 1 1 2 3 4 21131415161718 4s 2 4s 1 4p 6 4p 5 4p 4 4p 3 4p 2 4p 1 3d 6 3d 5 3d 4 3d 3 3d 2 3d 1 3d 7 3d 8 3d 9 3d 10 n = 5 5s 1 & 5s 2 5 5s 2 5s 1

105 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 2s 2 2s 1 2p 6 2p 5 2p 4 2p 3 2p 2 2p 1 1 2 3 4 21131415161718 4s 2 4s 1 4p 6 4p 5 4p 4 4p 3 4p 2 4p 1 3d 6 3d 5 3d 4 3d 3 3d 2 3d 1 3d 7 3d 8 3d 9 3d 10 n = 5 5p 1 to 5p 6 5 5s 2 5s 1 5p 6 5p 5 5p 4 5p 3 5p 2 5p 1

106 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 2s 2 2s 1 2p 6 2p 5 2p 4 2p 3 2p 2 2p 1 1 2 3 4 21131415161718 4s 2 4s 1 4p 6 4p 5 4p 4 4p 3 4p 2 4p 1 3d 6 3d 5 3d 4 3d 3 3d 2 3d 1 3d 7 3d 8 3d 9 3d 10 n = 5 4d 1 to 4d 10 5 5s 2 5s 1 5p 6 5p 5 5p 4 5p 3 5p 2 5p 1 4d 6 4d 5 4d 4 4d 3 4d 2 4d 1 4d 7 4d 8 4d 9 4d 10

107 Period 4

108

109 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 2s 2 2s 1 2p 6 2p 5 2p 4 2p 3 2p 2 2p 1 1 2 3 4 21131415161718 4s 2 4s 1 4p 6 4p 5 4p 4 4p 3 4p 2 4p 1 3d 6 3d 5 3d 4 3d 3 3d 2 3d 1 3d 7 3d 8 3d 9 3d 10 n = 4

110 Period 4

111 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 2s 2 2s 1 2p 6 2p 5 2p 4 2p 3 2p 2 2p 1 1 2 3 4 21131415161718 4s 2 4s 1 4p 6 4p 5 4p 4 4p 3 4p 2 4p 1 3d 6 3d 5 3d 4 3d 3 3d 2 3d 1 3d 7 3d 8 3d 9 3d 10 n = 4

112 Period 4

113 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 2s 2 2s 1 2p 6 2p 5 2p 4 2p 3 2p 2 2p 1 1 2 3 4 21131415161718 4s 2 4s 1 4p 6 4p 5 4p 4 4p 3 4p 2 4p 1 3d 6 3d 5 3d 4 3d 3 3d 2 3d 1 3d 7 3d 8 3d 9 3d 10 n = 4

114 Period 5

115 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 2s 2 2s 1 2p 6 2p 5 2p 4 2p 3 2p 2 2p 1 1 2 3 4 21131415161718 4s 2 4s 1 4p 6 4p 5 4p 4 4p 3 4p 2 4p 1 3d 6 3d 5 3d 4 3d 3 3d 2 3d 1 3d 7 3d 8 3d 9 3d 10 n = 5 5 5s 2 5s 1 5p 6 5p 5 5p 4 5p 3 5p 2 5p 1 4d 6 4d 5 4d 4 4d 3 4d 2 4d 1 4d 7 4d 8 4d 9 4d 10

116 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 2s 2 2s 1 2p 6 2p 5 2p 4 2p 3 2p 2 2p 1 1 2 3 4 21131415161718 4s 2 4s 1 4p 6 4p 5 4p 4 4p 3 4p 2 4p 1 3d 6 3d 5 3d 4 3d 3 3d 2 3d 1 3d 7 3d 8 3d 9 3d 10 5 5s 2 5s 1 5p 6 5p 5 5p 4 5p 3 5p 2 5p 1 4d 6 4d 5 4d 4 4d 3 4d 2 4d 1 4d 7 4d 8 4d 9 4d 10

117 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 2s 2 2s 1 2p 6 2p 5 2p 4 2p 3 2p 2 2p 1 1 2 3 4 21131415161718 4s 2 4s 1 4p 6 4p 5 4p 4 4p 3 4p 2 4p 1 3d 6 3d 5 3d 4 3d 3 3d 2 3d 1 3d 7 3d 8 3d 9 3d 10 5 5s 2 5s 1 5p 6 5p 5 5p 4 5p 3 5p 2 5p 1 4d 6 4d 5 4d 4 4d 3 4d 2 4d 1 4d 7 4d 8 4d 9 4d 10 As (33 e – )

118 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 2s 2 2s 1 2p 6 2p 5 2p 4 2p 3 2p 2 2p 1 1 2 3 4 21131415161718 4s 2 4s 1 4p 6 4p 5 4p 4 4p 3 4p 2 4p 1 3d 6 3d 5 3d 4 3d 3 3d 2 3d 1 3d 7 3d 8 3d 9 3d 10 5 5s 2 5s 1 5p 6 5p 5 5p 4 5p 3 5p 2 5p 1 4d 6 4d 5 4d 4 4d 3 4d 2 4d 1 4d 7 4d 8 4d 9 4d 10 As (33 e – )

119 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 2s 2 2s 1 2p 6 2p 5 2p 4 2p 3 2p 2 2p 1 1 2 3 4 21131415161718 4s 2 4s 1 4p 6 4p 5 4p 4 4p 3 4p 2 4p 1 3d 6 3d 5 3d 4 3d 3 3d 2 3d 1 3d 7 3d 8 3d 9 3d 10 5 5s 2 5s 1 5p 6 5p 5 5p 4 5p 3 5p 2 5p 1 4d 6 4d 5 4d 4 4d 3 4d 2 4d 1 4d 7 4d 8 4d 9 4d 10 As (33 e – )

120 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 2s 2 2s 1 2p 6 2p 5 2p 4 2p 3 2p 2 2p 1 1 2 3 4 21131415161718 4s 2 4s 1 4p 6 4p 5 4p 4 4p 3 4p 2 4p 1 3d 6 3d 5 3d 4 3d 3 3d 2 3d 1 3d 7 3d 8 3d 9 3d 10 5 5s 2 5s 1 5p 6 5p 5 5p 4 5p 3 5p 2 5p 1 4d 6 4d 5 4d 4 4d 3 4d 2 4d 1 4d 7 4d 8 4d 9 4d 10 As (33 e – ) [Ar]

121 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 2s 2 2s 1 2p 6 2p 5 2p 4 2p 3 2p 2 2p 1 1 2 3 4 21131415161718 4s 2 4s 1 4p 6 4p 5 4p 4 4p 3 4p 2 4p 1 3d 6 3d 5 3d 4 3d 3 3d 2 3d 1 3d 7 3d 8 3d 9 3d 10 5 5s 2 5s 1 5p 6 5p 5 5p 4 5p 3 5p 2 5p 1 4d 6 4d 5 4d 4 4d 3 4d 2 4d 1 4d 7 4d 8 4d 9 4d 10 As (33 e – ) [Ar] 4s 2

122 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 2s 2 2s 1 2p 6 2p 5 2p 4 2p 3 2p 2 2p 1 1 2 3 4 21131415161718 4s 2 4s 1 4p 6 4p 5 4p 4 4p 3 4p 2 4p 1 3d 6 3d 5 3d 4 3d 3 3d 2 3d 1 3d 7 3d 8 3d 9 3d 10 5 5s 2 5s 1 5p 6 5p 5 5p 4 5p 3 5p 2 5p 1 4d 6 4d 5 4d 4 4d 3 4d 2 4d 1 4d 7 4d 8 4d 9 4d 10 As (33 e – ) [Ar] 4s 2 3d 10

123 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 2s 2 2s 1 2p 6 2p 5 2p 4 2p 3 2p 2 2p 1 1 2 3 4 21131415161718 4s 2 4s 1 4p 6 4p 5 4p 4 4p 3 4p 2 4p 1 3d 6 3d 5 3d 4 3d 3 3d 2 3d 1 3d 7 3d 8 3d 9 3d 10 5 5s 2 5s 1 5p 6 5p 5 5p 4 5p 3 5p 2 5p 1 4d 6 4d 5 4d 4 4d 3 4d 2 4d 1 4d 7 4d 8 4d 9 4d 10 As (33 e – ) [Ar] 4s 2 3d 10 4p 3

124 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 2s 2 2s 1 2p 6 2p 5 2p 4 2p 3 2p 2 2p 1 1 2 3 4 21131415161718 4s 2 4s 1 4p 6 4p 5 4p 4 4p 3 4p 2 4p 1 3d 6 3d 5 3d 4 3d 3 3d 2 3d 1 3d 7 3d 8 3d 9 3d 10 5 5s 2 5s 1 5p 6 5p 5 5p 4 5p 3 5p 2 5p 1 4d 6 4d 5 4d 4 4d 3 4d 2 4d 1 4d 7 4d 8 4d 9 4d 10 As (33 e – ) [Ar] 4s 2 3d 10 4p 3

125 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 2s 2 2s 1 2p 6 2p 5 2p 4 2p 3 2p 2 2p 1 1 2 3 4 21131415161718 4s 2 4s 1 4p 6 4p 5 4p 4 4p 3 4p 2 4p 1 3d 6 3d 5 3d 4 3d 3 3d 2 3d 1 3d 7 3d 8 3d 9 3d 10 5 5s 2 5s 1 5p 6 5p 5 5p 4 5p 3 5p 2 5p 1 4d 6 4d 5 4d 4 4d 3 4d 2 4d 1 4d 7 4d 8 4d 9 4d 10 As (33 e – ) [Ar] 3d 10 4s 2 4p 3

126 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 2s 2 2s 1 2p 6 2p 5 2p 4 2p 3 2p 2 2p 1 1 2 3 4 21131415161718 4s 2 4s 1 4p 6 4p 5 4p 4 4p 3 4p 2 4p 1 3d 6 3d 5 3d 4 3d 3 3d 2 3d 1 3d 7 3d 8 3d 9 3d 10 5 5s 2 5s 1 5p 6 5p 5 5p 4 5p 3 5p 2 5p 1 4d 6 4d 5 4d 4 4d 3 4d 2 4d 1 4d 7 4d 8 4d 9 4d 10 As (33 e – ) [Ar] 3d 10 4s 2 4p 3

127 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 2s 2 2s 1 2p 6 2p 5 2p 4 2p 3 2p 2 2p 1 1 2 3 4 21131415161718 4s 2 4s 1 4p 6 4p 5 4p 4 4p 3 4p 2 4p 1 3d 6 3d 5 3d 4 3d 3 3d 2 3d 1 3d 7 3d 8 3d 9 3d 10 5 5s 2 5s 1 5p 6 5p 5 5p 4 5p 3 5p 2 5p 1 4d 6 4d 5 4d 4 4d 3 4d 2 4d 1 4d 7 4d 8 4d 9 4d 10 As (33 e – ) [Ar] 4s 2 3d 10 4p 3 As (33 e – ) [Ar] 3d 10 4s 2 4p 3 Both of these are correct notations

128 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 2s 2 2s 1 2p 6 2p 5 2p 4 2p 3 2p 2 2p 1 1 2 3 4 21131415161718 4s 2 4s 1 4p 6 4p 5 4p 4 4p 3 4p 2 4p 1 3d 6 3d 5 3d 4 3d 3 3d 2 3d 1 3d 7 3d 8 3d 9 3d 10 5 5s 2 5s 1 5p 6 5p 5 5p 4 5p 3 5p 2 5p 1 4d 6 4d 5 4d 4 4d 3 4d 2 4d 1 4d 7 4d 8 4d 9 4d 10 Ag

129 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 2s 2 2s 1 2p 6 2p 5 2p 4 2p 3 2p 2 2p 1 1 2 3 4 21131415161718 4s 2 4s 1 4p 6 4p 5 4p 4 4p 3 4p 2 4p 1 3d 6 3d 5 3d 4 3d 3 3d 2 3d 1 3d 7 3d 8 3d 9 3d 10 5 5s 2 5s 1 5p 6 5p 5 5p 4 5p 3 5p 2 5p 1 4d 6 4d 5 4d 4 4d 3 4d 2 4d 1 4d 7 4d 8 4d 9 4d 10 Ag (47 e – )

130 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 2s 2 2s 1 2p 6 2p 5 2p 4 2p 3 2p 2 2p 1 1 2 3 4 21131415161718 4s 2 4s 1 4p 6 4p 5 4p 4 4p 3 4p 2 4p 1 3d 6 3d 5 3d 4 3d 3 3d 2 3d 1 3d 7 3d 8 3d 9 3d 10 5 5s 2 5s 1 5p 6 5p 5 5p 4 5p 3 5p 2 5p 1 4d 6 4d 5 4d 4 4d 3 4d 2 4d 1 4d 7 4d 8 4d 9 4d 10 Ag (47 e – )

131 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 2s 2 2s 1 2p 6 2p 5 2p 4 2p 3 2p 2 2p 1 1 2 3 4 21131415161718 4s 2 4s 1 4p 6 4p 5 4p 4 4p 3 4p 2 4p 1 3d 6 3d 5 3d 4 3d 3 3d 2 3d 1 3d 7 3d 8 3d 9 3d 10 5 5s 2 5s 1 5p 6 5p 5 5p 4 5p 3 5p 2 5p 1 4d 6 4d 5 4d 4 4d 3 4d 2 4d 1 4d 7 4d 8 4d 9 4d 10 Ag (47 e – ) [Kr]

132 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 2s 2 2s 1 2p 6 2p 5 2p 4 2p 3 2p 2 2p 1 1 2 3 4 21131415161718 4s 2 4s 1 4p 6 4p 5 4p 4 4p 3 4p 2 4p 1 3d 6 3d 5 3d 4 3d 3 3d 2 3d 1 3d 7 3d 8 3d 9 3d 10 5 5s 2 5s 1 5p 6 5p 5 5p 4 5p 3 5p 2 5p 1 4d 6 4d 5 4d 4 4d 3 4d 2 4d 1 4d 7 4d 8 4d 9 4d 10 Ag (47 e – ) [Kr] 5s 2

133 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 2s 2 2s 1 2p 6 2p 5 2p 4 2p 3 2p 2 2p 1 1 2 3 4 21131415161718 4s 2 4s 1 4p 6 4p 5 4p 4 4p 3 4p 2 4p 1 3d 6 3d 5 3d 4 3d 3 3d 2 3d 1 3d 7 3d 8 3d 9 3d 10 5 5s 2 5s 1 5p 6 5p 5 5p 4 5p 3 5p 2 5p 1 4d 6 4d 5 4d 4 4d 3 4d 2 4d 1 4d 7 4d 8 4d 9 4d 10 Ag (47 e – ) [Kr] 5s 2 4d 9

134 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 2s 2 2s 1 2p 6 2p 5 2p 4 2p 3 2p 2 2p 1 1 2 3 4 21131415161718 4s 2 4s 1 4p 6 4p 5 4p 4 4p 3 4p 2 4p 1 3d 6 3d 5 3d 4 3d 3 3d 2 3d 1 3d 7 3d 8 3d 9 3d 10 5 5s 2 5s 1 5p 6 5p 5 5p 4 5p 3 5p 2 5p 1 4d 6 4d 5 4d 4 4d 3 4d 2 4d 1 4d 7 4d 8 4d 9 4d 10 Ag (47 e – ) [Kr] 5s 2 4d 9

135 Period 5              

136              

137              

138               

139               

140                Ag (47 e – ) [Kr] 5s 2 4d 9

141 Period 5                Ag (47 e – ) [Kr] 5s 1 4d 10

142 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 2s 2 2s 1 2p 6 2p 5 2p 4 2p 3 2p 2 2p 1 1 2 3 4 21131415161718 4s 2 4s 1 4p 6 4p 5 4p 4 4p 3 4p 2 4p 1 3d 6 3d 5 3d 4 3d 3 3d 2 3d 1 3d 7 3d 8 3d 9 3d 10 5 5s 2 5s 1 5p 6 5p 5 5p 4 5p 3 5p 2 5p 1 4d 6 4d 5 4d 4 4d 3 4d 2 4d 1 4d 7 4d 8 4d 9 4d 10 Ag (47 e – ) [Kr] 5s 1 4d 10

143 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 2s 2 2s 1 2p 6 2p 5 2p 4 2p 3 2p 2 2p 1 1 2 3 4 21131415161718 4s 2 4s 1 4p 6 4p 5 4p 4 4p 3 4p 2 4p 1 3d 6 3d 5 3d 4 3d 3 3d 2 3d 1 3d 7 3d 8 3d 9 3d 10 5 5s 2 5s 1 5p 6 5p 5 5p 4 5p 3 5p 2 5p 1 4d 6 4d 5 4d 4 4d 3 4d 2 4d 1 4d 7 4d 8 4d 9 4d 10 Ag (47 e – ) [Kr] 5s 1 4d 10

144 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 2s 2 2s 1 2p 6 2p 5 2p 4 2p 3 2p 2 2p 1 1 2 3 4 21131415161718 4s 2 4s 1 4p 6 4p 5 4p 4 4p 3 4p 2 4p 1 3d 6 3d 5 3d 4 3d 3 3d 2 3d 1 3d 7 3d 8 3d 9 3d 10 5 5s 2 5s 1 5p 6 5p 5 5p 4 5p 3 5p 2 5p 1 4d 6 4d 5 4d 4 4d 3 4d 2 4d 1 4d 7 4d 8 4d 9 4d 10 Ag (47 e – ) [Kr] 5s 1 4d 10

145 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 2s 2 2s 1 2p 6 2p 5 2p 4 2p 3 2p 2 2p 1 1 2 3 4 21131415161718 4s 2 4s 1 4p 6 4p 5 4p 4 4p 3 4p 2 4p 1 3d 6 3d 5 3d 4 3d 3 3d 2 3d 1 3d 7 3d 8 3d 9 3d 10 5 5s 2 5s 1 5p 6 5p 5 5p 4 5p 3 5p 2 5p 1 4d 6 4d 5 4d 4 4d 3 4d 2 4d 1 4d 7 4d 8 4d 9 4d 10 Ag (47 e – ) [Kr] 4d 10 5s 1

146 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 2s 2 2s 1 2p 6 2p 5 2p 4 2p 3 2p 2 2p 1 1 2 3 4 21131415161718 4s 2 4s 1 4p 6 4p 5 4p 4 4p 3 4p 2 4p 1 3d 6 3d 5 3d 4 3d 3 3d 2 3d 1 3d 7 3d 8 3d 9 3d 10 5 5s 2 5s 1 5p 6 5p 5 5p 4 5p 3 5p 2 5p 1 4d 6 4d 5 4d 4 4d 3 4d 2 4d 1 4d 7 4d 8 4d 9 4d 10 Ag (47 e – ) [Kr] 5s 1 4d 10 Ag (47 e – ) [Kr] 4d 10 5s 1 Both of these are correct notations

147 Writing Electron Configurations Using Core Notation Part 3 Core Notations for Heavier Elements

148 3s 2 3s 1 3p 6 3p 5 3p 4 3p 3 3p 2 3p 1 2s 2 2s 1 2p 6 2p 5 2p 4 2p 3 2p 2 2p 1 1 2 3 4 21131415161718 4s 2 4s 1 4p 6 4p 5 4p 4 4p 3 4p 2 4p 1 3d 6 3d 5 3d 4 3d 3 3d 2 3d 1 3d 7 3d 8 3d 9 3d 10 5 5s 2 5s 1 5p 6 5p 5 5p 4 5p 3 5p 2 5p 1 4d 6 4d 5 4d 4 4d 3 4d 2 4d 1 4d 7 4d 8 4d 9 4d 10

149

150

151

152 4f orbitals

153 Lanthanides

154

155 5f orbitals

156 Actinides

157 Lanthanides

158 Actinides Lanthanides

159 5 6 7

160 5 6 7 Pb (82 e – )

161 5 6 7

162 5 6 7

163 5 6 7 Pb (82 e – ) [Xe]

164 5 6 7 Pb (82 e – ) [Xe] 6s 2

165 5 6 7 Pb (82 e – ) [Xe] 6s 2 4f 14 4f orbitals

166 5 6 7 Pb (82 e – ) [Xe] 6s 2 4f 14 4f orbitals 54

167 5 6 7 Pb (82 e – ) [Xe] 6s 2 4f 14 4f orbitals 54+ 2

168 5 6 7 Pb (82 e – ) [Xe] 6s 2 4f 14 4f orbitals 54+ 2 + 14

169 5 6 7 Pb (82 e – ) [Xe] 6s 2 4f 14 4f orbitals 54+ 2 + 14 = 70 e –

170 5 6 7 Pb (82 e – ) [Xe] 6s 2 4f 14 d orbitals

171 5 6 7 Pb (82 e – ) [Xe] 6s 2 4f 14 5d orbitals

172 5 6 7 Pb (82 e – ) [Xe] 6s 2 4f 14 5d 10 5d orbitals

173 5 6 7 Pb (82 e – ) [Xe] 6s 2 4f 14 5d 10 5d orbitals 54+ 2 + 14 + 10 = 80 e –

174 5 6 7 Pb (82 e – ) [Xe] 6s 2 4f 14 5d 10 6p orbitals

175 5 6 7 Pb (82 e – ) [Xe] 6s 2 4f 14 5d 10 6p orbitals 6p 2

176 5 6 7 Pb (82 e – ) [Xe] 6s 2 4f 14 5d 10 6p 2 6p orbitals 6p 2

177 5 6 7 Pb (82 e – ) [Xe] 6s 2 4f 14 5d 10 6p 2 54+ 2 + 14 + 10 + 2

178 5 6 7 Pb (82 e – ) [Xe] 6s 2 4f 14 5d 10 6p 2 54+ 2 + 14 + 10 + 2 = 82 e –

179 5 6 7 Pb (82 e – ) [Xe] 6s 2 4f 14 5d 10 6p 2 54+ 2 + 14 + 10 + 2 = 82 e –

180 5 6 7 Pb (82 e – ) [Xe] 6s 2 4f 14 5d 10 6p 2

181 5 6 7

182 5 6 7

183 5 6 7 Pb (82 e – ) [Xe] 4f 14 5d 10 6s 2 6p 2

184 5 6 7 Pb (82 e – ) [Xe] 6s 2 4f 14 5d 10 6p 2 Pb (82 e – ) [Xe] 4f 14 5d 10 6s 2 6p 2 Both of these are correct notations

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