Table 1-1. Electron binding energies, in electron volts, for the elements in their natural forms.

Element

K 1s

L1 2s

L2 2p1/2

L3 2p3/2

M1 3s

M2 3p1/2

M3 3p3/2

M4 3d3/2

M5 3d5/2

N1 4s

N2 4p1/2

N3 4p3/2

71 Lu

63314

10870

10349

9244

2491

2264

2024

1639

1589

506.8*

412.4*

359.2*

72 Hf

65351

11271

10739

9561

2601

2365

2108

1716

1662

538*

438.2

380.7

73 Ta

67416

11682

11136

9881

2708

2469

2194

1793

1735

563.4

463.4

400.9

74 W

69525

12100

11544

10207

2820

2575

2281

1872

1809

594.1

490.4

423.6

75 Re

71676

12527

11959

10535

2932

2682

2367

1949

1883

625.4

518.7

446.8

76 Os

73871

12968

12385

10871

3049

2792

2457

2031

1960

658.2

549.1

470.7

77 Ir

76111

13419

12824

11215

3174

2909

2551

2116

2040

691.1

577.8

495.8

78 Pt

78395

13880

13273

11564

3296

3027

2645

2202

2122

725.4

609.1

519.4

79 Au

80725

14353

13734

11919

3425

3148

2743

2291

2206

762.1

642.7

546.3

80 Hg

83102

14839

14209

12284

3562

3279

2847

2385

2295

802.2

680.2

576.6

81 Tl

85530

15347

14698

12658

3704

3416

2957

2485

2389

846.2

720.5

609.5

82 Pb

88005

15861

15200

13035

3851

3554

3066

2586

2484

891.8

761.9

643.5

83 Bi

90524

16388

15711

13419

3999

3696

3177

2688

2580

939

805.2

678.8

84 Po

93105

16939

16244

13814

4149

3854

3302

2798

2683

995*

851*

705*

85 At

95730

17493

16785

14214

4317

4008

3426

2909

2787

1042*

886*

740*

86 Rn

98404

18049

17337

14619

4482

4159

3538

3022

2892

1097*

929*

768*

87 Fr

101137

18639

17907

15031

4652

4327

3663

3136

3000

1153*

980*

810*

88 Ra

103922

19237

18484

15444

4822

4490

3792

3248

3105

1208*

1058

879*

89 Ac

106755

19840

19083

15871

5002

4656

3909

3370

3219

1269*

1080*

890*

90 Th

109651

20472

19693

16300

5182

4830

4046

3491

3332

1330*

1168*

966.4

91 Pa

112601

21105

20314

16733

5367

5001

4174

3611

3442

1387*

1224*

1007*

92 U

115606

21757

20948

17166

5548

5182

4303

3728

3552

1439*b

1271*b

1043


Table 1-1. Electron binding energies (continued).

Element

N4 4d3/2

N5 4d5/2

N6 4f5/2

N7 4f7/2

O1 5s

O2 5p1/2

O3 5p3/2

O4 5d3/2

O5 5d5/2

P1 6s

P2 6p1/2

P3 6p3/2

71 Lu

206.1*

196.3*

8.9*

7.5*

57.3*

33.6*

26.7*

         

72 Hf

220.0

211.5

15.9

14.2

64.2

38*

29.9

         

73 Ta

237.9

226.4

23.5

21.6

69.7

42.2*

32.7

         

74 W

255.9

243.5

33.6*

31.4

75.6

45.3*b

36.8

         

75 Re

273.9

260.5

42.9*

40.5*

83

45.6*

34.6*b

         

76 Os

293.1

278.5

53.4

50.7

84*

58*

44.5

         

77 Ir

311.9

296.3

63.8

60.8

95.2*b

63.0*b

48.0

         

78 Pt

331.6

314.6

74.5

71.2

101.7*b

65.3*b

51.7

         

79 Au

353.2

335.1

87.6

84.0

107.2*b

74.2

57.2

         

80 Hg

378.2

358.8

104.0

99.9

127

83.1

64.5

9.6

7.8

     

81 Tl

405.7

385.0

122.2

117.8

136.0*b

94.6

73.5

14.7

12.5

     

82 Pb

434.3

412.2

141.7

136.9

147*b

106.4

83.3

20.7

18.1

     

83 Bi

464.0

440.1

162.3

157.0

159.3*b

119.0

92.6

26.9

23.8

     

84 Po

500*

473*

184*

184*

177*

132*

104*

31*

31*

     

85 At

533*

507

210*

210*

195*

148*

115*

40*

40*

     

86 Rn

567*

541*

238*

238*

214*

164*

127*

48*

48*

26

   

87 Fr

603*

577*

268*

268*

234*

182*

140*

58*

58*

34

15

15

88 Ra

636*

603*

299*

299*

254*

200*

153*

68*

68*

44

19

19

89 Ac

675*

639*

319*

319*

272*

215*

167*

80*

80*

90 Th

712.1

675.2

342.4

333.1

290*a

229*a

182*a

92.5

85.4

41.4

24.5

16.6

91 Pa

743*

708*

371*

360*

310*

232*

232*

94*

94*

92 U

778.3

736.2

388.2*

377.4

321*ab

257*ab

192*ab

102.8

94.2

43.9

26.8

16.8