1
IA
Periodic Table of the Elements
1
1
H
1.01
Hydrogen
3
2
3
4
Li
6.94
4
5
Be
B
9.01
10.81
14
IVA
6
C
12.01
15
VA
7
N
14.01
16
VIA
8
O
16.00
17
VIIA
9
F
19.00
Boron
Carbon
Nitrogen
Oxygen
Fluorine
11
12
13
14
15
16
17
30.97
32.07
Sulfur
Chlorine
33
34
35
Na
Mg
Sodium
Magnesium
24.31
3
IIIB
4
IVB
19
20
21
22
22.99
K
39.10
Rb
Ca
40.08
38
39
Sr
87.62
55
56
132.91
Cesium
87
Fr
(223)
Francium
44.96
Scandium
85.47
Cs
Sc
Calcium
Rubidium Strontium
7
13
IIIA
2
IIA
Beryllium
37
6
2
Lithium
Potassium
5
18
VIIIA
Ba
137.33
Y
88.91
Yttrium
Ti
47.88
Titanium
40
Zr
91.22
V
50.94
41
Nb
92.91
72
73
Hf
178.49
88
104
226.03
(261)
Rf
Ta
180.95
Tantalum
105
Db
(262)
Rutherfordium Dubnium
57
La
138.91
Lanthanum
89
Ac
227.03
Actinium
6
VIB
24
Cr
52.00
7
VIIB
25
Mn
54.94
Vanadium Chromium Manganese
Niobium
Hafnium
Radium
23
Zirconium
Barium
Ra
5
VB
58
Ce
140.12
Cerium
90
Th
232.04
42
Mo
43
Tc
8
9
10
VIII
26
Fe
55.85
Iron
44
Ru
27
Co
58.93
Cobalt
45
Rh
28
Ni
58.69
Nickel
46
Pd
95.94
(98)
101.07
102.90
74
75
76
77
190.23
192.22
Iridium
Platinum
108
109
110
(269)
(268)
(271)
Molybdenum Technetium Ruthenium Rhodium
W
183.84
Tungsten
106
Sg
(266)
Re
186.21
Rhenium
107
Bh
(264)
Seaborgium Bohrium
59
Pr
140.91
Praseodymium
60
Nd
144.24
Osmium
Hs
Ir
Mt
Hassium Meitnerium
61
Pm
(145)
62
Sm
150.36
92
231.04
238.03
U
Thorium Protactinium Uranium
93
Np
(237)
94
Pu
(244)
Si
11
IB
12
IIB
Aluminum
Silicon
29
30
31
32
Cu
63.55
Copper
47
Ag
Zn
65.39
Zinc
48
Cd
26.98
Ga
69.72
Gallium
49
In
28.09
Ge
72.61
P
Phosphorus
As
74.92
Germanium Arsenic
50
Sn
51
Sb
121.76
S
Se
78.96
Cl
35.45
Br
79.90
Selenium
Bromine
52
53
Te
I
106.42
107.87
Silver
Cadmium
112.41
114.82
118.71
Tin
Antimony
Tellurium
127.60
126.90
78
79
80
81
82
83
84
85
Palladium
Pt
195.08
Au
196.97
Gold
Hg
200.59
Mercury
Indium
Tl
204.38
Thallium
Pb
207.20
Lead
Bi
208.98
Bismuth
Po
(209)
Polonium
Iodine
At
(210)
Astatine
4.00
Helium
10
Ne
20.18
Neon
18
Ar
39.95
Argon
36
Kr
83.80
Krypton
54
Xe
131.29
Xenon
86
Rn
(222)
Radon
Ds
Darmstadtium
63
Eu
151.96
64
Gd
157.25
Neodymium Promethium Samarium Europium Gadolinium
91
Pa
Os
Al
He
95
Am
(243)
Neptunium Plutonium Americium
96
Cm
(247)
Curium
65
Tb
158.93
Terbium
97
Bk
(247)
66
Dy
162.50
67
Ho
164.93
Dysprosium Holmium
98
Cf
(251)
99
Es
(252)
68
Er
167.26
Erbium
100
Fm
(257)
69
Tm
168.93
70
Yb
173.04
71
Lu
174.97
Thulium
Ytterbium
Lutetium
101
102
103
(258)
(259)
(262)
Md
No
Lr
Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium