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Periodic table
- 1. Periodic Table of Elements
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
1
1
Hydrogen
1.00794
H
1
Atomic #
Name
Atomic Weight
Symbol
C Solid
Hg Liquid
H Gas
Rf Unknown
Metals Nonmetals
Alkalimetals
Alkaline
earthmetals
Lanthanoids
Transition
metals
Poormetals
Other
nonmetals
Noblegases
Actinoids
2
Helium
4.002602
He
2 K
2
3
Lithium
6.941
Li
2
1 4
Beryllium
9.012182
Be
2
2 5
Boron
10.811
B
2
3 6
Carbon
12.0107
C
2
4 7
Nitrogen
14.0067
N
2
5 8
Oxygen
15.9994
O
2
6 9
Fluorine
18.9984032
F
2
7 10
Neon
20.1797
Ne
2
8
K
L
3
11
Sodium
22.98976928
Na
2
8
1
12
Magnesium
24.3050
Mg
2
8
2
13
Aluminium
26.9815386
Al
2
8
3
14
Silicon
28.0855
Si
2
8
4
15
Phosphorus
30.973762
P
2
8
5
16
Sulfur
32.065
S
2
8
6
17
Chlorine
35.453
Cl
2
8
7
18
Argon
39.948
Ar
2
8
8
K
L
M
4
19
Potassium
39.0983
K
2
8
8
1
20
Calcium
40.078
Ca
2
8
8
2
21
Scandium
44.955912
Sc
2
8
9
2
22
Titanium
47.867
Ti
2
8
10
2
23
Vanadium
50.9415
V
2
8
11
2
24
Chromium
51.9961
Cr
2
8
13
1
25
Manganese
54.938045
Mn
2
8
13
2
26
Iron
55.845
Fe
2
8
14
2
27
Cobalt
58.933195
Co
2
8
15
2
28
Nickel
58.6934
Ni
2
8
16
2
29
Copper
63.546
Cu
2
8
18
1
30
Zinc
65.38
Zn
2
8
18
2
31
Gallium
69.723
Ga
2
8
18
3
32
Germanium
72.63
Ge
2
8
18
4
33
Arsenic
74.92160
As
2
8
18
5
34
Selenium
78.96
Se
2
8
18
6
35
Bromine
79.904
Br
2
8
18
7
36
Krypton
83.798
Kr
2
8
18
8
K
L
M
N
5
37
Rubidium
85.4678
Rb
2
8
18
8
1
38
Strontium
87.62
Sr
2
8
18
8
2
39
Yttrium
88.90585
Y
2
8
18
9
2
40
Zirconium
91.224
Zr
2
8
18
10
2
41
Niobium
92.90638
Nb
2
8
18
12
1
42
Molybdenum
95.96
Mo
2
8
18
13
1
43
Technetium
(97.9072)
Tc
2
8
18
14
1
44
Ruthenium
101.07
Ru
2
8
18
15
1
45
Rhodium
102.90550
Rh
2
8
18
16
1
46
Palladium
106.42
Pd
2
8
18
18
0
47
Silver
107.8682
Ag
2
8
18
18
1
48
Cadmium
112.411
Cd
2
8
18
18
2
49
Indium
114.818
In
2
8
18
18
3
50
Tin
118.710
Sn
2
8
18
18
4
51
Antimony
121.760
Sb
2
8
18
18
5
52
Tellurium
127.60
Te
2
8
18
18
6
53
Iodine
126.90447
I
2
8
18
18
7
54
Xenon
131.293
Xe
2
8
18
18
8
K
L
M
N
O
6
55
Caesium
132.9054519
Cs
2
8
18
18
8
1
56
Barium
137.327
Ba
2
8
18
18
8
2
57–71
72
Hafnium
178.49
Hf
2
8
18
32
10
2
73
Tantalum
180.94788
Ta
2
8
18
32
11
2
74
Tungsten
183.84
W
2
8
18
32
12
2
75
Rhenium
186.207
Re
2
8
18
32
13
2
76
Osmium
190.23
Os
2
8
18
32
14
2
77
Iridium
192.217
Ir
2
8
18
32
15
2
78
Platinum
195.084
Pt
2
8
18
32
17
1
79
Gold
196.966569
Au
2
8
18
32
18
1
80
Mercury
200.59
Hg
2
8
18
32
18
2
81
Thallium
204.3833
Tl
2
8
18
32
18
3
82
Lead
207.2
Pb
2
8
18
32
18
4
83
Bismuth
208.98040
Bi
2
8
18
32
18
5
84
Polonium
(208.9824)
Po
2
8
18
32
18
6
85
Astatine
(209.9871)
At
2
8
18
32
18
7
86
Radon
(222.0176)
Rn
2
8
18
32
18
8
K
L
M
N
O
P
7
87
Francium
(223)
Fr
2
8
18
32
18
8
1
88
Radium
(226)
Ra
2
8
18
32
18
8
2
89–103
104
Rutherfordium
(261)
Rf
2
8
18
32
32
10
2
105
Dubnium
(262)
Db
2
8
18
32
32
11
2
106
Seaborgium
(266)
Sg
2
8
18
32
32
12
2
107
Bohrium
(264)
Bh
2
8
18
32
32
13
2
108
Hassium
(277)
Hs
2
8
18
32
32
14
2
109
Meitnerium
(268)
Mt
2
8
18
32
32
15
2
110
Darmstadtium
(271)
Ds
2
8
18
32
32
17
1
111
Roentgenium
(272)
Rg
2
8
18
32
32
18
1
112
Copernicium
(285)
Cn
2
8
18
32
32
18
2
113
Ununtrium
(284)
Uut
2
8
18
32
32
18
3
114
Flerovium
(289)
Fl
2
8
18
32
32
18
4
115
Ununpentium
(288)
Uup
2
8
18
32
32
18
5
116
Livermorium
(292)
Lv
2
8
18
32
32
18
6
117
Ununseptium
Uus
118
Ununoctium
(294)
Uuo
2
8
18
32
32
18
8
K
L
M
N
O
P
Q
For elements with no stable isotopes, the mass number of the isotope with the longest half-life is in parentheses.
Periodic Table Design and Interface Copyright © 1997 Michael Dayah. http://www.ptable.com/ Last updated: May 9, 2013
57
Lanthanum
138.90547
La
2
8
18
18
9
2
58
Cerium
140.116
Ce
2
8
18
19
9
2
59
140.90765
Pr
2
8
18
21
8
2
60
Neodymium
144.242
Nd
2
8
18
22
8
2
61
Promethium
(145)
Pm
2
8
18
23
8
2
62
Samarium
150.36
Sm
2
8
18
24
8
2
63
Europium
151.964
Eu
2
8
18
25
8
2
64
Gadolinium
157.25
Gd
2
8
18
25
9
2
65
Terbium
158.92535
Tb
2
8
18
27
8
2
66
Dysprosium
162.500
Dy
2
8
18
28
8
2
67
Holmium
164.93032
Ho
2
8
18
29
8
2
68
Erbium
167.259
Er
2
8
18
30
8
2
69
Thulium
168.93421
Tm
2
8
18
31
8
2
70
Ytterbium
173.054
Yb
2
8
18
32
8
2
71
Lutetium
174.9668
Lu
2
8
18
32
9
2
89
Actinium
(227)
Ac
2
8
18
32
18
9
2
90
Thorium
232.03806
Th
2
8
18
32
18
10
2
91
Protactinium
231.03588
Pa
2
8
18
32
20
9
2
92
Uranium
238.02891
U
2
8
18
32
21
9
2
93
Neptunium
(237)
Np
2
8
18
32
22
9
2
94
Plutonium
(244)
Pu
2
8
18
32
24
8
2
95
Americium
(243)
Am
2
8
18
32
25
8
2
96
Curium
(247)
Cm
2
8
18
32
25
9
2
97
Berkelium
(247)
Bk
2
8
18
32
27
8
2
98
Californium
(251)
Cf
2
8
18
32
28
8
2
99
Einsteinium
(252)
Es
2
8
18
32
29
8
2
100
Fermium
(257)
Fm
2
8
18
32
30
8
2
101
Mendelevium
(258)
Md
2
8
18
32
31
8
2
102
Nobelium
(259)
No
2
8
18
32
32
8
2
103
Lawrencium
(262)
Lr
2
8
18
32
32
9
2
Michael Dayah For a fully interactive experience, visit www.ptable.com. michael@dayah.com
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