الوزن الذري (الكتلة الذرية) لجميع العناصر الكيميائية

u

[1.00784, 1.00811]

H

Hydrogen

1

u

4.002602

He

Helium

2

u

[6.938, 6.997]

Li

Lithium

3

u

9.0121831

Be

Beryllium

4

u

[10.806, 10.821]

B

Boron

5

u

[12.0096, 12.0116]

C

Carbon

6

u

[14.00643, 4.00728]

N

Nitrogen

7

u

[15.99903, 5.99977]

O

Oxygen

8

u

18.998403163

F

Fluorine

9

u

20.1797

Ne

Neon

10

u

22.98976928

Na

Sodium

11

u

[24.304, 24.307]

Mg

Magnesium

12

u

26.9815385

Al

Aluminium

13

u

[28.084, 28.086]

Si

Silicon

14

u

30.973761998

P

Phosphorus

15

u

[32.059, 32.076]

S

Sulfur

16

u

[35.446, 35.457]

Cl

Chlorine

17

u

39.948

Ar

Argon

19

u

39.0983

K

Potassium

18

u

40.078

Ca

Calcium

20

u

44.955908

Sc

Scandium

21

u

47.867

Ti

Titanium

22

u

50.9415

V

Vanadium

23

u

51.9961

Cr

Chromium

24

u

54.938044

Mn

Manganese

25

u

55.845

Fe

Iron

26

u

58.933194

Co

Cobalt

28

u

58.6934

Ni

Nickel

27

u

63.546

Cu

Copper

29

u

65.38

Zn

Zinc

30

u

69.723

Ga

Gallium

31

u

72.630

Ge

Germanium

32

u

74.921595

As

Arsenic

33

u

78.971

Se

Selenium

34

u

[79.901, 79.907]

Br

Bromine

35

u

83.798

Kr

Krypton

36

u

85.4678

Rb

Rubidium

37

u

87.62

Sr

Strontium

38

u

88.90594

Y

Yttrium

39

u

91.224

Zr

Zirconium

40

u

92.90637

Nb

Niobium

41

u

95.95

Mo

Molybdenum

42

u

(97)

Tc

Technetium

43

u

101.07

Ru

Ruthenium

44

u

102.90550

Rh

Rhodium

45

u

106.42

Pd

Palladium

46

u

107.8682

Ag

Silver

47

u

112.414

Cd

Cadmium

48

u

114.818

In

Indium

49

u

118.710

Sn

Tin

50

u

121.760

Sb

Antimony

51

u

127.60

Te

Tellurium

53

u

126.90447

I

Iodine

52

u

131.293

Xe

Xenon

54

u

132.90545196

Cs

Cesium

55

u

137.327

Ba

Barium

56

u

138.90547

La

Lanthanum

57

u

140.116

Ce

Cerium

58

u

140.90766

Pr

Praseodymium

59

u

144.242

Nd

Neodymium

60

u

(145)

Pm

Promethium

61

u

150.36

Sm

Samarium

62

u

151.964

Eu

Europium

63

u

157.25

Gd

Gadolinium

64

u

158.92535

Tb

Terbium

65

u

162.500

Dy

Dysprosium

66

u

164.93033

Ho

Holmium

67

u

167.259

Er

Erbium

68

u

168.93422

Tm

Thulium

69

u

173.045

Yb

Ytterbium

70

u

174.9668

Lu

Lutetium

71

u

178.49

Hf

Hafnium

72

u

180.94788

Ta

Tantalum

73

u

183.84

W

Tungsten

74

u

186.207

Re

Rhenium

75

u

190.23

Os

Osmium

76

u

192.217

Ir

Iridium

77

u

195.084

Pt

Platinum

78

u

196.966569

Au

Gold

79

u

200.592

Hg

Mercury

80

u

[204.382, 204.385]

Tl

Thallium

81

u

207.2

Pb

Lead

82

u

208.98040

Bi

Bismuth

83

u

(209)

Po

Polonium

84

u

(210)

At

Astatine

85

u

(222)

Rn

Radon

86

u

(223)

Fr

Francium

87

u

(226)

Ra

Radium

88

u

(227)

Ac

Actinium

89

u

232.0377

Th

Thorium

91

u

231.03588

Pa

Protactinium

90

u

238.02891

U

Uranium

93

u

(237)

Np

Neptunium

92

u

(244)

Pu

Plutonium

95

u

(243)

Am

Americium

94

u

(247)

Cm

Curium

96

u

(247)

Bk

Berkelium

97

u

(251)

Cf

Californium

98

u

(252)

Es

Einsteinium

99

u

(257)

Fm

Fermium

100

u

(258)

Md

Mendelevium

101

u

(259)

No

Nobelium

102

u

(262)

Lr

Lawrencium

104

u

(263)

Rf

Rutherfordium

103

u

(268)

Db

Dubnium

105

u

(271)

Sg

Seaborgium

106

u

(270)

Bh

Bohrium

107

u

(270)

Hs

Hassium

108

u

(278)

Mt

Meitnerium

109

u

(281)

Ds

Darmstadtium

110

u

(281)

Rg

Roentgenium

111

u

(285)

Cn

Copernicium

112

u

(286)

Nh

Nihonium

113

u

(289)

Fl

Flerovium

114

u

(289)

Mc

Moscovium

115

u

(293)

Lv

Livermorium

116

u

(294)

Ts

Tennessine

117

u

(294)

Og

Oganesson

118