The Elements
The following table shows the structure of a selection of the elements.
Proton number |
Nucleon number |
Symbol |
Name |
|
Proton number |
Nucleon number |
Symbol |
Name |
1 |
1 |
H |
Hydrogen |
|
54 |
132 |
Xe |
Xenon |
2 |
4 |
He |
Helium |
|
60 |
142 |
Nd |
Neodymium |
3 |
7 |
Li |
Lithium |
|
74 |
184 |
W |
Tungsten |
4 |
9 |
Be |
Beryllium |
|
77 |
193 |
Ir |
Iridium |
5 |
11 |
B |
Boron |
|
78 |
195 |
Pt |
Platinum |
6 |
12 |
C |
Carbon |
|
79 |
197 |
Au |
Gold |
7 |
14 |
N |
Nitrogen |
|
80 |
202 |
Hg |
Mercury |
8 |
16 |
Be |
Oxygen |
|
81 |
205 |
Tl |
Thallium |
10 |
20 |
Ne |
Neon |
|
82 |
208 |
Pb |
Lead |
11 |
23 |
Na |
Sodium |
|
84 |
209 |
Po |
Polonium |
14 |
28 |
Si |
Silicon |
|
86 |
222 |
Rn |
Radon |
15 |
31 |
P |
Phosphorus |
|
88 |
226 |
Ra |
Radium |
18 |
40 |
Ar |
Argon |
|
89 |
227 |
Ac |
Actinium |
22 |
48 |
Ti |
Titanium |
|
90 |
232 |
Th |
Thorium |
26 |
56 |
Fe |
Iron |
|
91 |
231 |
Pa |
Protoactinium |
27 |
59 |
Co |
Cobalt |
|
92 |
238 |
U |
Uranium |
28 |
58 |
Ni |
Nickel |
|
93 |
237 |
Np |
Neptunium |
29 |
63 |
Cu |
Copper |
|
94 |
242 |
Pu |
Plutonium |
30 |
64 |
Zn |
Zinc |
|
95 |
243 |
Am |
Americium |
32 |
74 |
Ge |
Germanium |
|
96 |
248 |
Cm |
Curium |
33 |
75 |
As |
Arsenic |
|
97 |
247 |
Bk |
Berkeliumium |
35 |
79 |
Br |
Bromine |
|
98 |
249 |
Cf |
Californium |
36 |
84 |
Kr |
Krypton |
|
99 |
253 |
Es |
Einsteinium |
38 |
88 |
Sr |
Strontium |
|
100 |
253 |
Fm |
Fermium |
47 |
107 |
Ag |
Silver |
|
101 |
255 |
Md |
Mendelevium |
48 |
114 |
Cd |
Cadmium |
|
102 |
253 |
No |
Nobelium |
50 |
120 |
Sn |
Tin |
|
103 |
254 |
Lw |
Lawrencium |
51 |
121 |
Sb |
Antimony |
|
|
|
|
|