Actinium

Ac

89

(277)

Aluminum

Al

13

26.982

Americium

Am

95

(243)

Antimony

Sb

51

121.75

Argon

Ar

18

39.948

Arsenic

As

33

74.922

Astatine

At

85

(210)

Barium

Ba

56

137.33

Berkelium

Bk

97

(247)

Beryllium

Be

4

9.0122

Bismuth

Bi

83

208.98

Bohrium

Bh

107

(264)

Boron

B

5

10.81

Bromine

Br

35

79.904

Cadmium

Cd

48

112.41

Calcium

Ca

20

40.08

Californium

Cf

98

(251)

Carbon

C

6

12.011

Cerium

Ce

58

140.12

Cesium

Cs

55

132.91

Chlorine

Cl

17

35.453

Chromium

Cr

24

51.996

Cobalt

Co

27

58.933

Copernicium

Cn

112

(277)

Copper

Cu

29

63.546

Curium

Cm

96

(247)

Darmstadtium

Ds

110

(269)

Dubnium

Db

105

(262)

Dysprosium

Dy

66

162.50

Einsteinium

Es

99

(252)

Erbium

Er

68

167.26

Europium

Eu

63

151.96

Fermium

Fm

100

(257)

Fluorine

F

9

18.998

Francium

Fr

87

(223)

Gadolinium

Gd

64

157.25

Gallium

Ga

31

69.72

Germanium

Ge

32

72.59

Gold

Au

79

196.97

Hafnium

Hf

72

178.49

Hassium

Hs

108

(265)

Helium

He

2

4.0026

Holmium

Ho

67

164.93

Hydrogen

H

1

1.0079

Indium

In

49

114.82

Iodine

I

53

126.90

Iridium

Ir

77

192.22

Iron

Fe

26

55.847

Krypton

Kr

36

83.80

Lanthanum

La

57

138.91

Lawrencium

Lr

103

(262)

Lead

Pb

82

207.2

Lithium

Li

3

6.941

Lutetium

Lu

71

174.97

Magnesium

Mg

12

24.305

Manganese

Mn

25

54.938

Meitnerium

Mt

109

(268)

Mendelevium

Md

101

(258)

Mercury

Hg

80

200.59

Molybdenum

Mo

42

95.94

Neodymium

Nd

60

144.24

Neon

Ne

10

20.179

Neptunium

Np

93

(237)

Nickel

Ni

28

58.71

Niobium

Nb

41

92.906

Nitrogen

N

7

14.007

Nobelium

No

102

(259)

Osmium

Os

76

190.2

Oxygen

O

8

15.999

Palladium

Pd

46

106.4

Phosphorus

P

15

30.974

Platinum

Pt

78

195.09

Plutonium

Pu

94

(244)

Polonium

Po

84

(209)

Potassium

K

19

39.098

Praseodymium

Pr

59

140.91

Promethium

Pm

61

(145)

Protactinium

Pa

91

231.04

Radium

Ra

88

(226)

Radon

Rn

86

(222)

Rhenium

Re

75

186.21

Rhodium

Rh

45

102.91

Roentgenium

Rg

111

(272)

Rubidium

Rb

37

85.468

Ruthenium

Ru

44

101.07

Rutherfordium

Rf

104

(261)

Samarium

Sm

62

150.4

Scandium

Sc

21

44.956

Seaborgium

Sg

106

(263)

Selenium

Se

34

78.96

Silicon

Si

14

28.086

Silver

Ag

47

107.87

Sodium

Na

11

22.990

Strontium

Sr

38

87.62

Sulfur

S

16

32.06

Tantalum

Ta

73

180.95

Technetium

Tc

43

(98)

Tellurium

Te

52

127.60

Terbium

Tb

65

158.93

Thallium

Tl

81

204.37

Thorium

Th

90

232.04

Thulium

Tm

69

168.93

Tin

Sn

50

118.69

Titanium

Ti

22

47.90

Tungsten

W

74

183.85

Uranium

U

92

238.03

Vanadium

V

23

50.941

Xenon

Xe

54

131.30

Ytterbium

Yb

70

173.04

Yttrium

Y

39

88.906

Zinc

Zn

30

65.38

Zirconium

Zr

40

91.22

^† Number in parentheses gives the mass number of the most stable isotope

†Name not officially assigned