Electron Configurations

Chapter 11

Periodic Table of the Elements 1

(+1)

18

(0) 1

H (-1) 1

2 (+2)

13 (+3)

14 (+2,4)

15 (+3-3)

16 (-2)

17 (-1)

2

He 4

3

Li 7

4

Be 9

5

B

11

6

C

12

7

N (+5) 14

8

O

16

9

F

19

10

Ne

20 11

Na 23

12

Mg 24

3 (+3)

4 (+4)

5 (+4,5)

6

7 (+4,6,7)

8

9 (+3)

10 (+2,4)

11

12 (+2)

13

Al 27

14

Si 28

15

P 31

16

S 32

17

Cl 35.5

18

Ar 40

19

K

39

20

Ca

40

21

Sc

45

22

Ti (+2,3)

48

23

V (+2,3)

51

24

Cr (+2,3,6)

52

25

Mn (+2,3)

55

26

Fe (+2,3)

56

27

Co (+2) 59

28

Ni (+3) 59

29

Cu (+1,2) 63.5

30

Zn

65

31

Ga

70

32

Ge

73

33

As

75

34

Se

79

35

Br

80

36

Kr

84 37

Rb

85

38

Sr

88

39

Y

89

40

Zr

91

41

Nb

93

42

Mo (+4,5,6)

96

43

Tc (+2) 97

44

Ru (+2,3) 101

45

Rh (+4,5) 103

46

Pd

106

47

Ag (+1) 107

48

Cd

112

49

In

115

50

Sn

119

51

Sb

122

52

Te

128

53

I

127

54

Xe

131 55

Cs

133

56

Ba

137

57

La

139

72

Hf

178

73

Ta

181

74

W (+4,5,6)

184

75

Re (+3) 186

76

Os (+4,6) 190

77

Ir (+4,5) 192

78

Pt

195

79

Au (+1,3) 197

80

Hg

201

81

Tl

204

82

Pb

207

83

Bi

209

84

Po

209

85

At

210

86

Rn

222 87

Fr 223

88

Ra 226

89

Ac 227

104

Rf 261

105

Db 262

106

Sg 263

107

Bh 262

108

Hs 265

109

Mt 266

110

Uun 269

111

Uuu 272

58

Ce 140

59

Pr 141

60

Nd 144

61

Pm 145

62

Sm 150

63

Eu 152

64

Gd 157

65

Tb 159

66

Dy 163

67

Ho 165

68

Er 167

69

Tm 169

70

Yb 173

71

Lu 175

90

Th 232

91

Pa 231

92

U 238

93

Np 237

94

Pu 244

95

Am 243

96

Cm 247

97

Bk 247

98

Cf 251

99

Es 254

100

Fm 257

101

Md 258

102

No 255

103

Lr 256

Z

SYMBOL (CHARGE)

A

1

2

3

4

5

6

7

11 18

1 H1

2 13 14 15 16 172

He4

3Li7

4Be9

5B11

6C12

7N14

8O16

9F19

10Ne20

11Na23

12Mg24

3 4 5 6 7 8 9 10 11 1213

Al27

14Si28

15P31

16S32

17Cl

35.5

18Ar40

19K39

20Ca40

21Sc45

22Ti48

23V51

24Cr52

25Mn55

26Fe56

27Co59

28Ni59

29Cu

63.5

30Zn65

31Ga70

32Ge73

33As75

34Se79

35Br80

36Kr84

37Rb85

38Sr88

39Y89

40Zr91

41Nb93

42Mo96

43Tc97

44Ru101

45Rh103

46Pd106

47Ag107

48Cd112

49In

115

50Sn119

51Sb122

52Te128

53I

127

54Xe131

55Cs133

56Ba137

57La139

72Hf178

73Ta181

74W

184

75Re186

76Os190

77Ir

192

78Pt

195

79Au197

80Hg201

81Tl

204

82Pb207

83Bi

209

84209

85At

210

86Rn222

87Fr

223

88Ra226

89Ac227

104Rf

261

105Db262

106Sg263

107Bh262

108Hs265

109Mt266

110Uun269

111Uuu272

58

Ce140

59

Pr141

60

Nd144

61

Pm145

62

Sm150

63

Eu152

64

Gd157

65

Tb159

66

Dy163

67

Ho165

68

Er167

69

Tm169

70

Yb173

71

Lu175

90

Th232

91

Pa231

92

U238

93

Np237

94

Pu244

95

Am243

96

Cm247

97

Bk247

98

Cf251

99

Es254

100

Fm257

101

Md258

102

No255

103

Lr256

11 18

1 H1

2 13 14 15 16 172

He4

3Li7

4Be9

5B11

6C12

7N14

8O16

9F19

10Ne20

11Na23

12Mg24

3 4 5 6 7 8 9 10 11 1213

Al27

14Si28

15P31

16S32

17Cl

35.5

18Ar40

19K39

20Ca40

21Sc45

22Ti48

23V51

24Cr52

25Mn55

26Fe56

27Co59

28Ni59

29Cu

63.5

30Zn65

31Ga70

32Ge73

33As75

34Se79

35Br80

36Kr84

37Rb85

38Sr88

39Y89

40Zr91

41Nb93

42Mo96

43Tc97

44Ru101

45Rh103

46Pd106

47Ag107

48Cd112

49In

115

50Sn119

51Sb122

52Te128

53I

127

54Xe131

55Cs133

56Ba137

57La139

72Hf178

73Ta181

74W

184

75Re186

76Os190

77Ir

192

78Pt

195

79Au197

80Hg201

81Tl

204

82Pb207

83Bi

209

84209

85At

210

86Rn222

87Fr

223

88Ra226

89Ac227

104Rf

261

105Db262

106Sg263

107Bh262

108Hs265

109Mt266

110Uun269

111Uuu272

58

Ce140

59

Pr141

60

Nd144

61

Pm145

62

Sm150

63

Eu152

64

Gd157

65

Tb159

66

Dy163

67

Ho165

68

Er167

69

Tm169

70

Yb173

71

Lu175

90

Th232

91

Pa231

92

U238

93

Np237

94

Pu244

95

Am243

96

Cm247

97

Bk247

98

Cf251

99

Es254

100

Fm257

101

Md258

102

No255

103

Lr256

11 18

1 H1

2 13 14 15 16 172

He4

3Li7

4Be9

5B11

6C12

7N14

8O16

9F19

10Ne20

11Na23

12Mg24

3 4 5 6 7 8 9 10 11 1213

Al27

14Si28

15P31

16S32

17Cl

35.5

18Ar40

19K39

20Ca40

21Sc45

22Ti48

23V51

24Cr52

25Mn55

26Fe56

27Co59

28Ni59

29Cu

63.5

30Zn65

31Ga70

32Ge73

33As75

34Se79

35Br80

36Kr84

37Rb85

38Sr88

39Y89

40Zr91

41Nb93

42Mo96

43Tc97

44Ru101

45Rh103

46Pd106

47Ag107

48Cd112

49In

115

50Sn119

51Sb122

52Te128

53I

127

54Xe131

55Cs133

56Ba137

57La139

72Hf178

73Ta181

74W

184

75Re186

76Os190

77Ir

192

78Pt

195

79Au197

80Hg201

81Tl

204

82Pb207

83Bi

209

84Po209

85At

210

86Rn222

87Fr

223

88Ra226

89Ac227

104Rf

261

105Db262

106Sg263

107Bh262

108Hs265

109Mt266

110Uun269

111Uuu272

58

Ce140

59

Pr141

60

Nd144

61

Pm145

62

Sm150

63

Eu152

64

Gd157

65

Tb159

66

Dy163

67

Ho165

68

Er167

69

Tm169

70

Yb173

71

Lu175

90

Th232

91

Pa231

92

U238

93

Np237

94

Pu244

95

Am243

96

Cm247

97

Bk247

98

Cf251

99

Es254

100

Fm257

101

Md258

102

No255

103

Lr256

11 18

1 H1

2 13 14 15 16 172

He4

3Li7

4Be9

5B11

6C12

7N14

8O16

9F19

10Ne20

11Na23

12Mg24

3 4 5 6 7 8 9 10 11 1213

Al27

14Si28

15P31

16S32

17Cl

35.5

18Ar40

19K39

20Ca40

21Sc45

22Ti48

23V51

24Cr52

25Mn55

26Fe56

27Co59

28Ni59

29Cu

63.5

30Zn65

31Ga70

32Ge73

33As75

34Se79

35Br80

36Kr84

37Rb85

38Sr88

39Y89

40Zr91

41Nb93

42Mo96

43Tc97

44Ru101

45Rh103

46Pd106

47Ag107

48Cd112

49In

115

50Sn119

51Sb122

52Te128

53I

127

54Xe131

55Cs133

56Ba137

57La139

72Hf178

73Ta181

74W

184

75Re186

76Os190

77Ir

192

78Pt

195

79Au197

80Hg201

81Tl

204

82Pb207

83Bi

209

84209

85At

210

86Rn222

87Fr

223

88Ra226

89Ac227

104Rf

261

105Db262

106Sg263

107Bh262

108Hs265

109Mt266

110Uun269

111Uuu272

58

Ce140

59

Pr141

60

Nd144

61

Pm145

62

Sm150

63

Eu152

64

Gd157

65

Tb159

66

Dy163

67

Ho165

68

Er167

69

Tm169

70

Yb173

71

Lu175

90

Th232

91

Pa231

92

U238

93

Np237

94

Pu244

95

Am243

96

Cm247

97

Bk247

98

Cf251

99

Es254

100

Fm257

101

Md258

102

No255

103

Lr256

11 18

1 H1

2 13 14 15 16 172

He4

3Li7

4Be9

5B11

6C12

7N14

8O16

9F19

10Ne20

11Na23

12Mg24

3 4 5 6 7 8 9 10 11 1213

Al27

14Si28

15P31

16S32

17Cl

35.5

18Ar40

19K39

20Ca40

21Sc45

22Ti48

23V51

24Cr52

25Mn55

26Fe56

27Co59

28Ni59

29Cu

63.5

30Zn65

31Ga70

32Ge73

33As75

34Se79

35Br80

36Kr84

37Rb85

38Sr88

39Y89

40Zr91

41Nb93

42Mo96

43Tc97

44Ru101

45Rh103

46Pd106

47Ag107

48Cd112

49In

115

50Sn119

51Sb122

52Te128

53I

127

54Xe131

55Cs133

56Ba137

57La139

72Hf178

73Ta181

74W

184

75Re186

76Os190

77Ir

192

78Pt

195

79Au197

80Hg201

81Tl

204

82Pb207

83Bi

209

84209

85At

210

86Rn222

87Fr

223

88Ra226

89Ac227

104Rf

261

105Db262

106Sg263

107Bh262

108Hs265

109Mt266

110Uun269

111Uuu272

58

Ce140

59

Pr141

60

Nd144

61

Pm145

62

Sm150

63

Eu152

64

Gd157

65

Tb159

66

Dy163

67

Ho165

68

Er167

69

Tm169

70

Yb173

71

Lu175

90

Th232

91

Pa231

92

U238

93

Np237

94

Pu244

95

Am243

96

Cm247

97

Bk247

98

Cf251

99

Es254

100

Fm257

101

Md258

102

No255

103

Lr256

How to Write Electron Configurations

• Read the periodic table left to right…….

– Every time you come to the end of an sublevel, write it down.

– Every time you come to the end of an energy level, write it down.

– When you reach the element you are writing the e.c. for, write it down.

ELEMENT SYMBOL ELECTRON CONFIGURATION

Aluminum

Silicon

Chlorine

Bromine

Nitrogen

Potassium

Tungsten

Zinc

Uranium

Gold

Iron

tin

strontium