PERIODIC TABLE OF THE ELEMENTS
1
Group
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
Period
1
2
3
4
5
6
7
H
Atomic Number
1.008
Lithium
3
Beryllium
4
6.941
Sodium
11
9.012
Magnesium
12
22.990
Potassium
19
24.305
Calcium
20
Scandium
21
Titanium
22
Vanadium
23
39.098
Rubidium
37
40.078
Strontium
38
44.956
Yttrium
39
47.88
Zirconium
40
50.942
Niobium
41
85.468
Cesium
55
87.62
Barium
56
88.906
Lanthanum
57
91.224
Hafnium
72
92.906
Tantalum
73
132.905
Francium
87
137.327
Radium
88
138.906
Actinium
89
223.020
226.025
227.028
Li
Na
K
Rb
Cs
Fr
Hydrogen
1
Name
Hydrogen
1
He
H
Symbol
Be
Helium
2
Carbon
6
Nitrogen
7
Oxygen
8
Fluorine
9
10.811
13
12.011
Silicon
14
14.007
Phosphorus
15
15.999
Sulfur
16
18.998
Chlorine
17
20.180
Argon
18
Zinc
30
26.982
Gallium
31
28.086
Germanium
32
30.974
Arsenic
33
32.066
Selenium
34
35.453
Bromine
35
39.948
Krypton
36
72.61
Tin
50
74.922
Antimony
51
78.96
Tellurium
52
79.904
Iodine
53
83.80
Xenon
54
121.757
Bismuth
83
127.60
Polonium
84
126.904
Astatine
85
131.290
Radon
86
208.982
209.978
222.018
Ytterbium
70
Lutetium
71
B
1.008
Atomic Mass
Aluminum
Mg
Ca
Sr
Ba
Ra
Al
Sc
Y
La
Ac
Ti
Zr
Hf
V
Nb
Ta
178.49
180.948
Ruthefordium Dubnium
104
105
Rf
(261)
Db
(262)
Chromium Manganese
24
25
Cr
Copper
29
58.933
Rhodium
45
58.693
Palladium
46
63.546
Silver
47
65.39
Cadmium
48
69.723
Indium
49
101.07
Osmium
76
102.906
Iridium
77
106.42
Platinum
78
107.868
Gold
79
112.411
Mercury
80
114.82
Thallium
81
118.710
Lead
82
195.08
196.967
200.59
204.383
207.2
Europium
63
Gadolinium
64
Terbium
65
157.25
Curium
96
158.925
Berkelium
97
247.070
247.070
Mn
Fe
Tc
Ru
Re
Os
Actinide Series
1 Mole = 6.02 × 1023
Ce
Pr
Rh
97.907
Rhenium
75
183.84
Seaborgium
106
186.207
Bohrium
107
190.2
Hassium
108
192.22
Meitnerium
109
(263)
(262)
(265)
(266)
Sg
Bh
Hs
Cerium Praseodymium Neodymium Promethium Samarium
59
61
62
58
60
Lanthanide Series
Co
95.94
Tungsten
74
W
Nd
Pm
Sm
Ir
Eu
140.908
Protactinium
91
144.24
Uranium
92
144.913
Neptunium
93
150.36
Plutonium
94
151.965
Americium
95
232.038
231.038
238.029
237.048
244.064
243.061
Pa
U
Np
Pu
Ni
Pd
Pt
Cu
Ag
Au
Zn
Cd
Hg
Ga
In
Tl
Ge
Sn
Pb
N
P
As
Sb
Bi
208.980
O
S
Se
Te
Po
F
Cl
Br
I
At
Mt
140.115
Thorium
90
Th
Si
Nickel
28
51.996
55.847
54.938
Molybdenum Technetium Ruthenium
42
43
44
Mo
C
Cobalt
27
Iron
26
Am
Gd
Cm
Tb
Bk
4.003
Neon
10
Boron
5
Dysprosium Holmium
66
67
Dy
Ho
162.50
164.930
Californium Einsteinium
98
99
Cf
251.080
Es
252.083
Erbium
68
Er
167.26
Fermium
100
Fm
257.095
Thulium
69
Tm
Yb
168.934
173.04
Mendelevium Nobelium
101
102
Md
258.099
No
259.101
Lu
174.967
Lawrencium
103
Lr
260.105
Ne
Ar
Kr
Xe
Rn