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1
H
Hydrogen
1.0078
3
Li
Lithium
6.938
4
Be
Beryllium
9.0122
5
B
Boron
10.806
6
C
Carbon
12.009
7
N
Nitrogen
14.006
8
O
Oxygen
15.999
9
F
Fluorine
18.998
10
Ne
Neon
20.180
2
He
Helium
4.0026
11
Na
Sodium
22.990
12
Mg
Magnesium
24.305
13
Al
Aluminium
26.982
14
Si
Silicon
28.084
15
P
Phosphorus
30.974
16
S
Sulphur
32.059
17
Cl
Chlorine
35.446
18
Ar
Argon
39.948
19
K
Potassium
39.008
20
Ca
Calcium
40.078
21
Sc
Scandium
44.956
22
Ti
Titanium
47.867
23
V
Vanadium
50.942
24
Cr
Chromium
51.996
25
Mn
Manganese
54.938
26
Fe
Iron
55.845
27
Co
Cobalt
58.933
28
Ni
Nickel
58.693
29
Cu
Copper
63.546
30
Zn
Zinc
65.38
31
Ga
Gallium
69.723
32
Ge
Germanium
72.63
33
As
Arsenic
74.922
34
Se
Selenium
78.96
35
Br
Bromine
79.904
36
Kr
Krypton
83.798
37
Rb
Rubidium
85.468
38
Sr
Strontium
87.62
39
Y
Yttrium
88.906
40
Zr
Zirconium
91.224
41
Nb
Niobium
92.906
42
Mo
Molybdenum
95.96
43
Tc
Technetium
98.9062
44
Ru
Ruthenium
101.07
45
Rh
Rhodium
102.91
46
Pd
Palladium
106.42
47
Ag
Silver
107.87
48
Cd
Cadmium
112.41
49
In
Indium
114.82
50
Sn
Tin
118.71
51
Sb
Antimony
121.76
52
Te
Tellurium
127.60
53
I
Iodine
126.90
54
Xe
Xenon
131.29
55
Cs
Caesium
132.91
56
Ba
Barium
137.33
57-71
See
Below
72
Hf
Hafnium
178.49
73
Ta
Tantalum
180.95
74
W
Tungsten
183.84
75
Re
Rhenium
186.21
76
Os
Osmium
190.23
77
Ir
Iridium
192.22
78
Pt
Platinum
195.08
79
Au
Gold
196.97
80
Hg
Mercury
200.59
81
Tl
Thallium
204.38
82
Pb
Lead
207.2
83
Bi
Bismuth
208.98
84
Po
Polonium
209
85
At
Astatine
210
86
Rn
Radon
222
87
Fr
Francium
223
88
Ra
Radium
226
104
Rf
Rutherfordium
261
105
Db
Dubnium
262
106
Sg
Seaborgium
268
107
Bh
Bohrium
271
108
Hs
Hassium
272
109
Mt
Meitnerium
270
110
Ds
Darmstadtium
276
111
Rg
Roentgenium
281
112
Cn
Copernicium
285
113
Nh
Nihonium
284
114
Fl
Flerovium
289
115
Mc
Moscovium
288
116
Lv
Livermorium
293
117
Ts
Tennessine
294
118
Og
Oganessom
294
57
La
Lanthanum
138.91
58
Ce
Cerium
140.12
60
Nd
Neodymium
144.24
61
Pm
Promethium
148
62
Sm
Samarium
150.36
63
Eu
Europium
151.96
64
Gd
Gadolinium
157.25
65
Tb
Terbium
158.93
66
Dy
Dysprosium
162.50
67
Ho
Holmium
164.93
68
Er
Erbium
167.26
69
Tm
Thulium
168.93
70
Yb
Ytterbium
173.04
71
Lu
Lutetium
174.97
89
Ac
Actinium
227
90
Th
Thorium
232.04
91
Pa
Protactinium
231.04
92
U
Uranium
238.03
93
Np
Neptunium
237
94
Pu
Plutonium
244
95
Am
Americium
243
96
Cm
Curium
247
<
97
Bk
Berkelium
247
98
Cf
Californium
251
99
Es
Einsteinium
252
100
Fm
Fermium
257
101
Md
Mendelevium
258
102
No
Nobelium
259
103
Lr
Lawrencium
262
89-103
See
Below
59
Pr
Praseodymium
140.91
Alkali
Metals
Alkaline
Earth
Metals
Transition
Metals
Post-Transition
Metals
Metalloids
Other
Nonmetals
Halogens
Noble
Gases
Lanthanides
Actinides
Unknown
Properties
1
H
Hydrogen
1.0078
Guide
Atomic
Number
Element
Symbol
Element
Name
Atomic
Weight
Periodic
Table
of
the
Elements
Temperature:
70
°F
Cryo <-> White Hot
Au
Gold
H
Hydrogen
Fe
Iron