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