List of elements by atomic number

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A table of chemical elements ordered by atomic number and color coded according to type of element. Given is each element's name, element symbol, group and period, Chemical series, and atomic mass (or most stable isotope).

Chemical series of the periodic table

Alkali metals	Alkaline earth metals	Lanthanides	Actinides	Transition metals
Poor metals	Metalloids	Nonmetals	Halogens	Noble gases

Atomic number	Name	Symbol	Period, Group	Chemical series	Mass (g/mol)
1	Hydrogen	H	1, 1	Nonmetal	0,000,001 1.00794(7)[1] [2] [3]
2	Helium	He	1, 18	Noble gas	0,000,004 4.002602(2)[1] [3]
3	Lithium	Li	2, 1	Alkali metal	0,000,006 6.941(2)[1] [2] [3] [4]
4	Beryllium	Be	2, 2	Alkaline earth metal	0,000,009 9.012182(3)
5	Boron	B	2, 13	Metalloid	0,000,010 10.811(7)[1] [2] [3]
6	Carbon	C	2, 14	Nonmetal	0,000,012 12.0107(8)[1] [3]
7	Nitrogen	N	2, 15	Nonmetal	0,000,014 14.0067(2)[1] [3]
8	Oxygen	O	2, 16	Nonmetal	0,000,015 15.9994(3)[1] [3]
9	Fluorine	F	2, 17	Halogen	0,000,018 18.9984032(5)
10	Neon	Ne	2, 18	Noble gas	0,000,020 20.1797(6)[1] [2]
11	Sodium	Na	3, 1	Alkali metal	0,000,022 22.98976928(2)
12	Magnesium	Mg	3, 2	Alkaline earth metal	0,000,024 24.3050(6)
13	Aluminium	Al	3, 13	Poor metal	0,000,026 26.9815386(8)
14	Silicon	Si	3, 14	Metalloid	0,000,028 28.0855(3)[3]
15	Phosphorus	P	3, 15	Nonmetal	0,000,030 30.973762(2)
16	Sulfur	S	3, 16	Nonmetal	0,000,032 32.065(5)[1] [3]
17	Chlorine	Cl	3, 17	Halogen	0,000,035 35.453(2)[1] [2] [3]
18	Argon	Ar	3, 18	Noble gas	0,000,039 39.948(1)[1] [3]
19	Potassium	K	4, 1	Alkali metal	0,000,039 39.0983(1)
20	Calcium	Ca	4, 2	Alkaline earth metal	0,000,040 40.078(4)[1]
21	Scandium	Sc	4, 3	Transition metal	0,000,044 44.955912(6)
22	Titanium	Ti	4, 4	Transition metal	0,000,047 47.867(1)
23	Vanadium	V	4, 5	Transition metal	0,000,050 50.9415(1)
24	Chromium	Cr	4, 6	Transition metal	0,000,051 51.9961(6)
25	Manganese	Mn	4, 7	Transition metal	0,000,054 54.938045(5)
26	Iron	Fe	4, 8	Transition metal	0,000,055 55.845(2)
27	Cobalt	Co	4, 9	Transition metal	0,000,058 58.933195(5)
28	Nickel	Ni	4, 10	Transition metal	0,000,058 58.6934(2)
29	Copper	Cu	4, 11	Transition metal	0,000,063 63.546(3)[3]
30	Zinc	Zn	4, 12	Transition metal	0,000,065 65.409(4)
31	Gallium	Ga	4, 13	Poor metal	0,000,069 69.723(1)
32	Germanium	Ge	4, 14	Metalloid	0,000,072 72.64(1)
33	Arsenic	As	4, 15	Metalloid	0,000,074 74.92160(2)
34	Selenium	Se	4, 16	Nonmetal	0,000,078 78.96(3)[3]
35	Bromine	Br	4, 17	Halogen	0,000,079 79.904(1)
36	Krypton	Kr	4, 18	Noble gas	0,000,083 83.798(2)[1] [2]
37	Rubidium	Rb	5, 1	Alkali metal	0,000,085 85.4678(3)[1]
38	Strontium	Sr	5, 2	Alkaline earth metal	0,000,087 87.62(1)[1] [3]
39	Yttrium	Y	5, 3	Transition metal	0,000,088 88.90585(2)
40	Zirconium	Zr	5, 4	Transition metal	0,000,091 91.224(2)[1]
41	Niobium	Nb	5, 5	Transition metal	0,000,092 92.906 38(2)
42	Molybdenum	Mo	5, 6	Transition metal	0,000,095 95.94(2)[1]
43	Technetium	Tc	5, 7	Transition metal	0,000,098 [98.9063][5]
44	Ruthenium	Ru	5, 8	Transition metal	0,000,101 101.07(2)[1]
45	Rhodium	Rh	5, 9	Transition metal	0,000,102 102.90550(2)
46	Palladium	Pd	5, 10	Transition metal	0,000,106 106.42(1)[1]
47	Silver	Ag	5, 11	Transition metal	0,000,107 107.8682(2)[1]
48	Cadmium	Cd	5, 12	Transition metal	0,000,112 112.411(8)[1]
49	Indium	In	5, 13	Poor metal	0,000,114 114.818(3)
50	Tin	Sn	5, 14	Poor metal	0,000,118 118.710(7)[1]
51	Antimony	Sb	5, 15	Metalloid	0,000,121 121.760(1)[1]
52	Tellurium	Te	5, 16	Metalloid	0,000,127 127.60(3)[1]
53	Iodine	I	5, 17	Halogen	0,000,126 126.90447(3)
54	Xenon	Xe	5, 18	Noble gas	0,000,131 131.293(6)[1] [2]
55	Caesium	Cs	6, 1	Alkali metal	0,000,132 132.9054519(2)
56	Barium	Ba	6, 2	Alkaline earth metal	0,000,137 137.327(7)
57	Lanthanum	La	6	Lanthanide	0,000,138 138.90547(7)[1]
58	Cerium	Ce	6	Lanthanide	0,000,140 140.116(1)[1]
59	Praseodymium	Pr	6	Lanthanide	0,000,140 140.90765(2)
60	Neodymium	Nd	6	Lanthanide	0,000,144 144.242(3)[1]
61	Promethium	Pm	6	Lanthanide	0,000,146 [146.9151][5]
62	Samarium	Sm	6	Lanthanide	0,000,150 150.36(2)[1]
63	Europium	Eu	6	Lanthanide	0,000,151 151.964(1)[1]
64	Gadolinium	Gd	6	Lanthanide	0,000,157 157.25(3)[1]
65	Terbium	Tb	6	Lanthanide	0,000,158 158.92535(2)
66	Dysprosium	Dy	6	Lanthanide	0,000,162 162.500(1)[1]
67	Holmium	Ho	6	Lanthanide	0,000,164 164.93032(2)
68	Erbium	Er	6	Lanthanide	0,000,167 167.259(3)[1]
69	Thulium	Tm	6	Lanthanide	0,000,168 168.93421(2)
70	Ytterbium	Yb	6	Lanthanide	0,000,173 173.04(3)[1]
71	Lutetium	Lu	6, 3	Lanthanide	0,000,174 174.967(1)[1]
72	Hafnium	Hf	6, 4	Transition metal	0,000,178 178.49(2)
73	Tantalum	Ta	6, 5	Transition metal	0,000,180 180.9479(1)
74	Tungsten	W	6, 6	Transition metal	0,000,183 183.84(1)
75	Rhenium	Re	6, 7	Transition metal	0,000,186 186.207(1)
76	Osmium	Os	6, 8	Transition metal	0,000,190 190.23(3)[1]
77	Iridium	Ir	6, 9	Transition metal	0,000,192 192.217(3)
78	Platinum	Pt	6, 10	Transition metal	0,000,195 195.084(9)
79	Gold	Au	6, 11	Transition metal	0,000,196 196.966569(4)
80	Mercury	Hg	6, 12	Transition metal	0,000,200 200.59(2)
81	Thallium	Tl	6, 13	Poor metal	0,000,204 204.3833(2)
82	Lead	Pb	6, 14	Poor metal	0,000,207 207.2(1)[1] [3]
83	Bismuth	Bi	6, 15	Poor metal	0,000,208 208.98040(1)
84	Polonium	Po	6, 16	Metalloid	0,000,208 [208.9824][5]
85	Astatine	At	6, 17	Halogen	0,000,209 [209.9871][5]
86	Radon	Rn	6, 18	Noble gas	0,000,222 [222.0176][5]
87	Francium	Fr	7, 1	Alkali metal	0,000,223 [223.0197][5]
88	Radium	Ra	7, 2	Alkaline earth metal	0,000,226 [226.0254][5]
89	Actinium	Ac	7	Actinide	0,000,227 [227.0278][5]
90	Thorium	Th	7	Actinide	0,000,232 232.03806(2)[5] [1]
91	Protactinium	Pa	7	Actinide	0,000,231 231.03588(2)[5]
92	Uranium	U	7	Actinide	0,000,238 238.02891(3)[5] [1] [2]
93	Neptunium	Np	7	Actinide	0,000,237 [237.0482][5]
94	Plutonium	Pu	7	Actinide	0,000,244 [244.0642][5]
95	Americium	Am	7	Actinide	0,000,243 [243.0614][5]
96	Curium	Cm	7	Actinide	0,000,247 [247.0703][5]
97	Berkelium	Bk	7	Actinide	0,000,247 [247.0703][5]
98	Californium	Cf	7	Actinide	0,000,251 [251.0796][5]
99	Einsteinium	Es	7	Actinide	0,000,252 [252.0829][5]
100	Fermium	Fm	7	Actinide	0,000,257 [257.0951][5]
101	Mendelevium	Md	7	Actinide	0,000,258 [258.0986][5]
102	Nobelium	No	7	Actinide	0,000,259 [259.1009][5]
103	Lawrencium	Lr	7, 3	Actinide	0,000,260 [260.1053][5]
104	Rutherfordium	Rf	7, 4	Transition metal	0,000,261 [261.1087][5]
105	Dubnium	Db	7, 5	Transition metal	0,000,262 [262.1138][5]
106	Seaborgium	Sg	7, 6	Transition metal	0,000,263 [263.1182][5]
107	Bohrium	Bh	7, 7	Transition metal	0,000,262 [262.1229][5]
108	Hassium	Hs	7, 8	Transition metal	0,000,265 [265][5]
109	Meitnerium	Mt	7, 9	Transition metal	0,000,266 [266][5]
110	Darmstadtium	Ds	7, 10	Transition metal	0,000,269 [269][5]
111	Roentgenium	Rg	7, 11	Transition metal	0,000,272 [272][5]
112	Ununbium	Uub	7, 12	Transition metal	0,000,285 [285][5]
113	Ununtrium	Uut	7, 13	Poor metal	0,000,284 [284][5]
114	Ununquadium	Uuq	7, 14	Poor metal	0,000,289 [289][5]
115	Ununpentium	Uup	7, 15	Poor metal	0,000,288 [288][5]
116	Ununhexium	Uuh	7, 16	Poor metal	0,000,292 [292][5]
117	Ununseptium	Uus	7, 17	Halogen	0,000,293 [6]
118	Ununoctium	Uuo	7, 18	Noble gas	0,000,294 [294][5]

Chemical series of the periodic table

Alkali metals	Alkaline earth metals	Lanthanides	Actinides	Transition metals
Poor metals	Metalloids	Nonmetals	Halogens	Noble gases

[edit] Notes

1. ^ ^{a b c d e f g h i j k l m n o p q r s t u v w x y z aa ab ac ad ae af ag ah ai aj ak al am} The isotopic composition of this element varies in some geological specimens, and the variation may exceed the uncertainty stated in the table.
2. ^ ^{a b c d e f g h} The isotopic composition of the element can vary in commercial materials, which can cause the atomic weight to deviate significantly from the given value.
3. ^ ^{a b c d e f g h i j k l m n o} The isotopic composition varies in terrestrial material such that a more precise atomic weight can not be given.
4. ^ The atomic weight of commercial Lithium can vary between 6.939 and 6.996—analysis of the specific material is necessary to find a more accurate value.
5. ^ ^{a b c d e f g h i j k l m n o p q r s t u v w x y z aa ab ac ad ae af ag ah ai aj} The element does not have any stable nuclides, and a value in brackets, e.g. [209], indicates the mass number of the longest-lived isotope of the element or characteristic isotopic composition.
6. ^ This element has not been discovered.

[edit] References

• Atomic Weights of the Elements 2001, Pure Appl. Chem. 75(8), 1107-1122, 2003. Retrieved June 30, 2005. Atomic weights of elements with atomic numbers from 1-109 taken from this source.
• IUPAC Standard Atomic Weights Revised (2005).
• WebElements Periodic Table. Retrieved June 30, 2005. Atomic weights of elements with atomic numbers 110-116 taken from this source.

v • d • e

Periodic tables

Standard · Vertical · Full names · Names and atomic masses · Text for last · Huge table · Atomic masses
Electron configurations · Metals and nonmetals · Blocks · Valences · Inline f-block · 218 elements · Alternatives

Lists of elements:
Name · Atomic symbol · Atomic number · Boiling point · Melting point · Density · Atomic mass

Groups:
1 · 2 · 3 · 4 · 5 · 6 · 7 · 8 · 9 · 10 · 11 · 12 · 13 · 14 · 15 · 16 · 17 · 18

Periods:
1 · 2 · 3 · 4 · 5 · 6 · 7 · 8

Series:
Alkalis · Alkaline earths · Lanthanides · Actinides · Transition metals
Poor metals · Metalloids · Nonmetals · Halogens · Noble gases

Blocks:
s-block · p-block · d-block · f-block · g-block

Retrieved from "http://en.wikipedia.org../../../l/i/s/List_of_elements_by_atomic_number.html"

Categories: Articles to be merged since December 2006 | Periodic table | Chemical elements | Chemistry lists

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