The Periodic Table of Elements - NASA
The Periodic Table of Elements
1
H
HYDROGEN
1
3
4
6
C
Atomic Number = Number of Protons = Number of Electrons
Chemical Symbol 5
NON-METALS
6
7
8
9
2
He
HELIUM
4 10
Li Be
LITHIUM BERYLLIUM
7
9
CARBON
12
Chemical Name Atomic Weight = Number of Protons + Number of Neutrons*
B
BORON
11
C
CARBON
12
N
NITROGEN
14
O
OXYGEN
16
F
FLUORINE
19
Ne
NEON
20
11
12
13
14
15
16
17
18
Na Mg
Al Si P S Cl Ar
SODIUM MAGNESIUM
23
24
METALS
ALUMINUM SILICON PHOSPHORUS SULFUR
27
28
31
32
CHLORINE
35
ARGON
40
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr
POTASSIUM CALCIUM SCANDIUM TITANIUM VANADIUM CHROMIUM MANGANESE
39
40
45
48
51
52
55
IRON
56
COBALT
59
NICKEL
59
COPPER
64
ZINC
65
GALLIUM GERMANIUM ARSENIC SELENIUM BROMINE KRYPTON
70
73
75
79
80
84
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe
RUBIDIUM STRONTIUM YTTRIUM ZIRCONIUM NIOBIUM MOLYBDENUM TECHNETIUM RUTHENIUM RHODIUM PALLADIUM SILVER
85
88
89
91
93
96
98
101 103 106 108
CADMIUM
112
INDIUM
115
TIN
119
ANTIMONY TELLURIUM IODINE
122 128 127
XENON
131
55
56
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
Cs Ba
Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn
CESIUM
133
BARIUM
137
HAFNIUM TANTALUM TUNGSTEN RHENIUM OSMIUM
178 181 184 186 190
IRIDIUM PLATINUM
192 195
GOLD
197
MERCURY THALLIUM
201 204
LEAD
207
BISMUTH POLONIUM ASTATINE
209 209 210
RADON
222
87
88
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
Fr Ra
Rf Db Sg Bh Hs Mt Ds Rg Cn Nh Fl Mc Lv Ts Og
FRANCIUM RADIUM
223 226
RUTHERFORDIUM DUBNIUM SEABORGIUM BOHRIUM HASSIUM MEITNERIUM DARMSTADTIUM ROENTGENIUM COPERNICIUM NIHONIUM FLEROVIUM MOSCOVIUM LIVERMORIUM TENNESSINE OGANESSON
263 268 271 270 270 278 281 281 285 286 289 289 293 294 294
KEY
= Solid at room temperature = Liquid at room temperature
57
58
La Ce
LANTHANUM CERIUM
139 140
59
60
61
62
63
Pr Nd Pm Sm Eu
PRASEODYMIUM NEODYMIUM PROMETHIUM SAMARIUM EUROPIUM
141 144 145 150 152
64
65
Gd Tb
GADOLINIUM TERBIUM
157 159
66
67
Dy Ho
DYSPROSIUM HOLMIUM
163 165
68
Er
ERBIUM
167
69
Tm
THULIUM
169
70
71
Yb Lu
YTTERBIUM LUTETIUM
173 175
= Gas at room temperature = Radioactive = Artificially Made
89
Ac
ACTINIUM
227
90
Th
THORIUM
232
91
92
Pa U
PROTACTINIUM URANIUM
231 238
93
94
95
96
Np Pu Am Cm
NEPTUNIUM PLUTONIUM AMERICIUM CURIUM
237 244 243 247
97
98
99
100
Bk Cf Es Fm
BERKELIUM CALIFORNIUM EINSTEINIUM FERMIUM
247 251 252 257
101 102 103
Md No Lr
MENDELEVIUM NOBELIUM LAWRENCIUM
258 259 262
* The atomic weights listed on this Table of Elements have been rounded to the nearest whole number. As a result, this chart actually displays the mass number of a specific isotope for each element. An element's complete, unrounded atomic weight can be found on the It's Elemental website:
Last revised on June 8, 2016
Science Education Web Resources
It's Elemental
An easy to understand Table of Elements
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Element Games
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