Periodic table of elements
| atomic number |
Symbol |
name |
abridged standard atomic weight |
| 1 |
H |
hydrogen |
1.0080 ± 0.0002 |
| 2 |
He |
helium |
4.0026 ± 0.0001 |
| 3 |
Li |
lithium |
6.94 ± 0.06 |
| 4 |
Be |
beryllium |
9.0122 ± 0.0001 |
| 5 |
B |
boron |
10.81 ± 0.02 |
| 6 |
C |
carbon |
12.011 ± 0.002 |
| 7 |
N |
nitrogen |
14.007 ± 0.001 |
| 8 |
O |
oxygen |
15.999 ± 0.001 |
| 9 |
F |
fluorine |
18.998 ± 0.001 |
| 10 |
Ne |
neon |
20.180 ± 0.001 |
| 11 |
Na |
sodium |
22.990 ± 0.001 |
| 12 |
Mg |
magnesium |
24.305 ± 0.002 |
| 13 |
Al |
aluminium |
26.982 ± 0.001 |
| 14 |
Si |
silicon |
28.085 ± 0.001 |
| 15 |
P |
phosphorus |
30.974 ± 0.001 |
| 16 |
S |
sulfur |
32.06 ± 0.02 |
| 17 |
Cl |
chlorine |
35.45 ± 0.01 |
| 18 |
Ar |
argon |
39.95 ± 0.16 |
| 19 |
K |
potassium |
39.098 ± 0.001 |
| 20 |
Ca |
calcium |
40.078 ± 0.004 |
| 21 |
Sc |
scandium |
44.956 ± 0.001 |
| 22 |
Ti |
titanium |
47.867 ± 0.001 |
| 23 |
V |
vanadium |
50.942 ± 0.001 |
| 24 |
Cr |
chromium |
51.996 ± 0.001 |
| 25 |
Mn |
manganese |
54.938 ± 0.001 |
| 26 |
Fe |
iron |
55.845 ± 0.002 |
| 27 |
Co |
cobalt |
58.933 ± 0.001 |
| 28 |
Ni |
nickel |
58.693 ± 0.001 |
| 29 |
Cu |
copper |
63.546 ± 0.003 |
| 30 |
Zn |
zinc |
65.38 ± 0.02 |
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