Element |
Symbol |
Atomic Number |
Atomic Mass† |
---|---|---|---|
Actinium |
Ac |
89 |
(277) |
Aluminum |
Al |
13 |
26.982 |
Americium |
Am |
95 |
(243) |
Antimony |
Sb |
51 |
121.75 |
Argon |
Ar |
18 |
39.948 |
Arsenic |
As |
33 |
74.922 |
Astatine |
At |
85 |
(210) |
Barium |
Ba |
56 |
137.33 |
Berkelium |
Bk |
97 |
(247) |
Beryllium |
Be |
4 |
9.0122 |
Bismuth |
Bi |
83 |
208.98 |
Bohrium |
Bh |
107 |
(264) |
Boron |
B |
5 |
10.81 |
Bromine |
Br |
35 |
79.904 |
Cadmium |
Cd |
48 |
112.41 |
Calcium |
Ca |
20 |
40.08 |
Californium |
Cf |
98 |
(251) |
Carbon |
C |
6 |
12.011 |
Cerium |
Ce |
58 |
140.12 |
Cesium |
Cs |
55 |
132.91 |
Chlorine |
Cl |
17 |
35.453 |
Chromium |
Cr |
24 |
51.996 |
Cobalt |
Co |
27 |
58.933 |
Copernicium |
Cn |
112 |
(277) |
Copper |
Cu |
29 |
63.546 |
Curium |
Cm |
96 |
(247) |
Darmstadtium |
Ds |
110 |
(269) |
Dubnium |
Db |
105 |
(262) |
Dysprosium |
Dy |
66 |
162.50 |
Einsteinium |
Es |
99 |
(252) |
Erbium |
Er |
68 |
167.26 |
Europium |
Eu |
63 |
151.96 |
Fermium |
Fm |
100 |
(257) |
Fluorine |
F |
9 |
18.998 |
Francium |
Fr |
87 |
(223) |
Gadolinium |
Gd |
64 |
157.25 |
Gallium |
Ga |
31 |
69.72 |
Germanium |
Ge |
32 |
72.59 |
Gold |
Au |
79 |
196.97 |
Hafnium |
Hf |
72 |
178.49 |
Hassium |
Hs |
108 |
(265) |
Helium |
He |
2 |
4.0026 |
Holmium |
Ho |
67 |
164.93 |
Hydrogen |
H |
1 |
1.0079 |
Indium |
In |
49 |
114.82 |
Iodine |
I |
53 |
126.90 |
Iridium |
Ir |
77 |
192.22 |
Iron |
Fe |
26 |
55.847 |
Krypton |
Kr |
36 |
83.80 |
Lanthanum |
La |
57 |
138.91 |
Lawrencium |
Lr |
103 |
(262) |
Lead |
Pb |
82 |
207.2 |
Lithium |
Li |
3 |
6.941 |
Lutetium |
Lu |
71 |
174.97 |
Magnesium |
Mg |
12 |
24.305 |
Manganese |
Mn |
25 |
54.938 |
Meitnerium |
Mt |
109 |
(268) |
Mendelevium |
Md |
101 |
(258) |
Mercury |
Hg |
80 |
200.59 |
Molybdenum |
Mo |
42 |
95.94 |
Neodymium |
Nd |
60 |
144.24 |
Neon |
Ne |
10 |
20.179 |
Neptunium |
Np |
93 |
(237) |
Nickel |
Ni |
28 |
58.71 |
Niobium |
Nb |
41 |
92.906 |
Nitrogen |
N |
7 |
14.007 |
Nobelium |
No |
102 |
(259) |
Osmium |
Os |
76 |
190.2 |
Oxygen |
O |
8 |
15.999 |
Palladium |
Pd |
46 |
106.4 |
Phosphorus |
P |
15 |
30.974 |
Platinum |
Pt |
78 |
195.09 |
Plutonium |
Pu |
94 |
(244) |
Polonium |
Po |
84 |
(209) |
Potassium |
K |
19 |
39.098 |
Praseodymium |
Pr |
59 |
140.91 |
Promethium |
Pm |
61 |
(145) |
Protactinium |
Pa |
91 |
231.04 |
Radium |
Ra |
88 |
(226) |
Radon |
Rn |
86 |
(222) |
Rhenium |
Re |
75 |
186.21 |
Rhodium |
Rh |
45 |
102.91 |
Roentgenium |
Rg |
111 |
(272) |
Rubidium |
Rb |
37 |
85.468 |
Ruthenium |
Ru |
44 |
101.07 |
Rutherfordium |
Rf |
104 |
(261) |
Samarium |
Sm |
62 |
150.4 |
Scandium |
Sc |
21 |
44.956 |
Seaborgium |
Sg |
106 |
(263) |
Selenium |
Se |
34 |
78.96 |
Silicon |
Si |
14 |
28.086 |
Silver |
Ag |
47 |
107.87 |
Sodium |
Na |
11 |
22.990 |
Strontium |
Sr |
38 |
87.62 |
Sulfur |
S |
16 |
32.06 |
Tantalum |
Ta |
73 |
180.95 |
Technetium |
Tc |
43 |
(98) |
Tellurium |
Te |
52 |
127.60 |
Terbium |
Tb |
65 |
158.93 |
Thallium |
Tl |
81 |
204.37 |
Thorium |
Th |
90 |
232.04 |
Thulium |
Tm |
69 |
168.93 |
Tin |
Sn |
50 |
118.69 |
Titanium |
Ti |
22 |
47.90 |
Tungsten |
W |
74 |
183.85 |
Uranium |
U |
92 |
238.03 |
Vanadium |
V |
23 |
50.941 |
Xenon |
Xe |
54 |
131.30 |
Ytterbium |
Yb |
70 |
173.04 |
Yttrium |
Y |
39 |
88.906 |
Zinc |
Zn |
30 |
65.38 |
Zirconium |
Zr |
40 |
91.22 |
† Number in parentheses gives the mass number of the most stable isotope †Name not officially assigned |