40 Examples of Isotopes

In chemistry they talk about isotopes to refer to those atoms that are of the same element but that, although they have the same atomic number (that is, with the same number of protons in the nucleus), its mass number (sum of protons and neutrons) is different. For example: uranium, thallium, lead, mercury.

Isotopes, then, do not have the same neutron number. This implies that an atom can have several isotopes and still remain the same. chemical element. For example, the protium (¹H), deuterium (²H) and tritium (³H) are isotopes of the element hydrogen (H). The number in the upper left of the chemical element symbol represents the mass number of the isotope.

Generally, elements have several isotopes and are only 21 the elements that have only one natural isotope. On the other hand, from radioactive processes, man has managed to create many isotopes artificially, although these are characterized by being much more unstable than natural ones and their useful life is also much longer short.

The concept of

“isotope” was created in 1911 by Frederick soddy, an English chemist and professor, when he managed to corroborate that the atoms had the same chemical properties.

Classification of isotopes

Isotopes can be classified into several groups:

Isotope Examples

Below is a list with some isotopes, as an example:

1. Uranium-234 (²³⁴OR)
2. Thallium-203 (²⁰³Tl)
3. Lead-207 (²⁰⁷Pb)
4. Mercury-201 (²⁰¹Hg)
5. Iridium-191 (¹⁹¹To go)
6. Potassium-39 (³⁹K)
7. Rhenium-185 (¹⁸⁵Re)
8. Zinc-67 (⁶⁷Zn)
9. Hafnium-176 (¹⁷⁶Hf)
10. Samarium-147 (¹⁴⁷Ye)
11. Germanium-74 (⁷⁴Ge)
12. Dysprosium-163 (¹⁶³Dy)
13. Europium-151 (¹⁵¹Eu)
14. Krypton-80 (⁸⁰Kr)
15. Titanium-49 (⁴⁹You)
16. Gadolinium-156 (¹⁵⁶Gd)
17. Erbium-166 (¹⁶⁶Er)
18. Sulfur-32 (³²S)
19. Nickel-61 (⁶¹Neither)
20. Carbon-12 (¹²C)
21. Neodomium-142 (¹⁴²Nd)
22. Cerium-140 (¹⁴⁰EC)
23. Xenon-131 (¹³¹Xe)
24. Tin-122 (¹²²Sn)
25. Iron-56 (⁵⁶Faith)
26. Cadmium-113 (¹¹³CD)
27. Silver-107 (¹⁰⁷Ag)
28. Ruthenium-102 (¹⁰²Ru)
29. Lithium-6 (⁶Li)
30. Oxygen-18 (¹⁸OR)
31. Chromium-52 (⁵²Cr)
32. Tellurium-124 (¹²⁴Tea)
33. Zirconium-94 (⁹⁴Zr)
34. Argon-40 (⁴⁰Ar)
35. Neon-22 (²²Ne)
36. Boron-11 (¹¹B)
37. Helium-4 (⁴He)
38. Molybdenum-100 (¹⁰⁰Mo)
39. Cerium-140 (¹⁴⁰EC)
40. Tungsten-183 (¹⁸³W)