Tên nguyên tố Kí hiệu Hóa trị Nguyên tử khối (M)
Hydrogen H I 1
Helium He - 4
Lithium Li I 7
Beryllium Be II 9
Boron B III 11
Carbon C II, IV 12
Nitrogen N I, II, III, IV, V 14
Oxygen O II 16
Fluorine F I 19
Sodium Na I 23
Magnesium Mg II 24
Aluminium Al III 27
Silicon Si IV 28
Phosphorus P III, V 31
Sulfur S II, IV, VI 32
Chlorine Cl I, III, V, VII 35.5
Potassium K I 39
Calcium Ca II 40
Iron Fe II, III 56
Zinc Zn II 65
Copper Cu I, II 64
Silver Ag I 108
Barium Ba II 137
Manganese Mn II, III, IV, VI, VII 127
Tên nguyên tố Kí hiệu Hóa trị Nguyên tử khối (M)
Lead Pb II, IV 207
Mercury Hg I, II 200

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Tên nguyên tố

Kí hiệu

Hóa trị

Nguyên tử khối (M)

Hydrogen

H

I

1

Helium

He

-

4

Lithium

Li

I

7

Beryllium

Be

II

9

Boron

B

III

11

Carbon

C

II, IV

12

Nitrogen

N

I, II, III, IV, V

14

Oxygen

O

II

16

Fluorine

F

I

19

Sodium

Na

I

23

Magnesium

Mg

II

24

Aluminium

Al

III

27

Silicon

Si

IV

28

Phosphorus

P

III, V

31

Sulfur

S

II, IV, VI

32

Chlorine

Cl

I, III, V, VII

35.5

Potassium

K

I

39

Calcium

Ca

II

40

Iron

Fe

II, III

56

Zinc

Zn

II

65

Copper

Cu

I, II

64

Silver

Ag

I

108

Barium

Ba

II

137

Manganese

Mn

II, III, IV, VI, VII

127

Lead

Pb

II, IV

207

Mercury

Hg

I, II

200