Izotopi naturali ai elementelor chimice

Simbolul

Izotopii (numarul de masa)

Numarul de izotopi

Al

27

1

Ag

107,109

2

As

75

1

Au

197

1

Ba

138,137,136,135,134,130,132

7

Be

9

1

Bi

209,210,211,212,214

5

B

11,10

2

Br

79,81

2

Ca

40,44,42,48,43,46

6

C

12,13

2

Cl

35,37

2

Co

59

1

Cr

52,53,50,54 16216u2020q

4

Cu

63,65

2

Fe

56,54,57,58

4

F

19

1

Ge

74,72,70,73,76

5

H

1,2

2

Hg

202,200,199,201,198,204,196

7

He

4,3

2

I

127

1

K

39,41,40

3

La

139,138

2

Li

7,6

2

Mg

24,25,26

3

Mn

55

1

Mo

98,96,95,92,94,97,100

7

Na

23

1

Ni

58,60,62,61,64

5

N

14,15

2

Simbolul

Izotopii (numarul de masa)

Numarul de izotopi

O

16,18,17

3

Pb

208,206,207,204,210,211,212,214

8

Pt

195,194,196,198,192,190

6

Sb

121,123

2

Se

80,78,76,82,77,74

6

Si

28,29,30

3

S

32,34,33,36

4

Sn

120,118,116,119,117,124,122,112,112,114,115

10

Sr

88,86,87,84

4

Ti

48,46,47,49,50

5

V

51,52

2

W

184,186,182,180

4

Zn

64,66,68,67,70

5

Zr

90,94,92,91,96

5

U

238,235,234

3