List of Elements by Atomic Number

Posted in Science

#

Atomic
Weight

Name

Symbol

M.P.
°C

B.P.
°C

Discovery
Year

1

1.0079

Hydrogen

H

-259

-253

1776

2

4.0026

Helium

He

-272

-269

1895

3

6.941

Lithium

Li

180

1347

1817

4

9.0122

Beryllium

Be

1278

2970

1797

5

10.811

Boron

B

2300

2550

1808

6

12.0107

Carbon

C

3500

4827

ancient

7

14.0067

Nitrogen

N

-210

-196

1772

8

15.9994

Oxygen

O

-218

-183

1774

9

18.9984

Fluorine

F

-220

-188

1886

10

20.1797

Neon

Ne

-249

-246

1898

11

22.9897

Sodium

Na

98

883

1807

12

24.305

Magnesium

Mg

639

1090

1755

13

26.9815

Aluminum

Al

660

2467

1825

14

28.0855

Silicon

Si

1410

2355

1824

15

30.9738

Phosphorus

P

44

280

1669

16

32.065

Sulfur

S

113

445

ancient

17

35.453

Chlorine

Cl

-101

-35

1774

18

39.948

Argon

Ar

-189

-186

1894

19

39.0983

Potassium

K

64

774

1807

20

40.078

Calcium

Ca

839

1484

1808

21

44.9559

Scandium

Sc

1539

2832

1879

22

47.867

Titanium

Ti

1660

3287

1791

23

50.9415

Vanadium

V

1890

3380

1830

24

51.9961

Chromium

Cr

1857

2672

1797

25

54.938

Manganese

Mn

1245

1962

1774

26

55.845

Iron

Fe

1535

2750

ancient

27

58.9332

Cobalt

Co

1495

2870

1735

28

58.6934

Nickel

Ni

1453

2732

1751

29

63.546

Copper

Cu

1083

2567

ancient

30

65.39

Zinc

Zn

420

907

ancient

31

69.723

Gallium

Ga

30

2403

1875

32

72.64

Germanium

Ge

937

2830

1886

33

74.9216

Arsenic

As

81

613

ancient

34

78.96

Selenium

Se

217

685

1817

35

79.904

Bromine

Br

-7

59

1826

36

83.8

Krypton

Kr

-157

-153

1898

37

85.4678

Rubidium

Rb

39

688

1861

38

87.62

Strontium

Sr

769

1384

1790

39

88.9059

Yttrium

Y

1523

3337

1794

40

91.224

Zirconium

Zr

1852

4377

1789

41

92.9064

Niobium

Nb

2468

4927

1801

42

95.94

Molybdenum

Mo

2617

4612

1781

43

98

Technetium

Tc

2200

4877

1937

44

101.07

Ruthenium

Ru

2250

3900

1844

45

102.9055

Rhodium

Rh

1966

3727

1803

46

106.42

Palladium

Pd

1552

2927

1803

47

107.8682

Silver

Ag

962

2212

ancient

48

112.411

Cadmium

Cd

321

765

1817

49

114.818

Indium

In

157

2000

1863

50

118.71

Tin

Sn

232

2270

ancient

51

121.76

Antimony

Sb

630

1750

ancient

52

127.6

Tellurium

Te

449

990

1783

53

126.9045

Iodine

I

114

184

1811

54

131.293

Xenon

Xe

-112

-108

1898

55

132.9055

Cesium

Cs

29

678

1860

56

137.327

Barium

Ba

725

1140

1808

57

138.9055

Lanthanum

La

920

3469

1839

58

140.116

Cerium

Ce

795

3257

1803

59

140.9077

Praseodymium

Pr

935

3127

1885

60

144.24

Neodymium

Nd

1010

3127

1885

61

145

Promethium

Pm

1100

3000

1945

62

150.36

Samarium

Sm

1072

1900

1879

63

151.964

Europium

Eu

822

1597

1901

64

157.25

Gadolinium

Gd

1311

3233

1880

65

158.9253

Terbium

Tb

1360

3041

1843

66

162.5

Dysprosium

Dy

1412

2562

1886

67

164.9303

Holmium

Ho

1470

2720

1867

68

167.259

Erbium

Er

1522

2510

1842

69

168.9342

Thulium

Tm

1545

1727

1879

70

173.04

Ytterbium

Yb

824

1466

1878

71

174.967

Lutetium

Lu

1656

3315

1907

72

178.49

Hafnium

Hf

2150

5400

1923

73

180.9479

Tantalum

Ta

2996

5425

1802

74

183.84

Tungsten

W

3410

5660

1783

75

186.207

Rhenium

Re

3180

5627

1925

76

190.23

Osmium

Os

3045

5027

1803

77

192.217

Iridium

Ir

2410

4527

1803

78

195.078

Platinum

Pt

1772

3827

1735

79

196.9665

Gold

Au

1064

2807

ancient

80

200.59

Mercury

Hg

-39

357

ancient

81

204.3833

Thallium

Tl

303

1457

1861

82

207.2

Lead

Pb

327

1740

ancient

83

208.9804

Bismuth

Bi

271

1560

ancient

84

209

Polonium

Po

254

962

1898

85

210

Astatine

At

302

337

1940

86

222

Radon

Rn

-71

-62

1900

87

223

Francium

Fr

27

677

1939

88

226

Radium

Ra

700

1737

1898

89

227

Actinium

Ac

1050

3200

1899

90

232.0381

Thorium

Th

1750

4790

1829

91

231.0359

Protactinium

Pa

1568

 

1913

92

238.0289

Uranium

U

1132

3818

1789

93

237

Neptunium

Np

640

3902

1940

94

244

Plutonium

Pu

640

3235

1940

95

243

Americium

Am

994

2607

1944

96

247

Curium

Cm

1340

 

1944

97

247

Berkelium

Bk

986

 

1949

98

251

Californium

Cf

900

 

1950

99

252

Einsteinium

Es

860

 

1952

100

257

Fermium

Fm

1527

 

1952

101

258

Mendelevium

Md

 

 

1955

102

259

Nobelium

No

827

 

1958

103

262

Lawrencium

Lr

1627

 

1961

104

261

Rutherfordium

Rf

 

 

1964

105

262

Dubnium

Db

 

 

1967

106

266

Seaborgium

Sg

 

 

1974

107

264

Bohrium

Bh

 

 

1981

108

277

Hassium

Hs

 

 

1984

109

268

Meitnerium

Mt

 

 

1982

 

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