Structured Lists Directory

Overview

Major Element Isotopes

Major Element Isotopes is a comprehensive dataset of isotopes (atomic nuclei with different mass numbers) for important elements from atomic number 1 to 94. It distinguishes between stable and radioactive isotopes, including physical properties such as natural abundance and half-life. The data covers isotopes essential for science, medicine, and energy applications, ranging from hydrogen isotopes (protium, deuterium, tritium) to isotopes of uranium and plutonium that are crucial as nuclear fuels.

chemistry isotopes atomic nuclei radioactive isotopes stable isotopes periodic table atomic number mass number nuclear physics
code slug name description element_atomicNumber element_nameEn element_nameJa element_symbol isotopes
1 hydrogen-isotopes Hydrogen Isotopes Three isotopes of hydrogen (protium, deuterium, tritium). 1 Hydrogen 水素 H [{"massNumber":1,"symbol":"¹H","name":"Protium","stability":"stable","naturalAbundance":0.99985,"halfLife":null},{"massNumber":2,"symbol":"²H","name":"Deuterium","stability":"stable","naturalAbundance":0.000115,"halfLife":null},{"massNumber":3,"symbol":"³H","name":"Tritium","stability":"radioactive","naturalAbundance":0,"halfLife":"12.32 years"}]
2 helium-isotopes Helium Isotopes Two stable isotopes of helium (helium-3, helium-4). 2 Helium ヘリウム He [{"massNumber":3,"symbol":"³He","name":"Helium-3","stability":"stable","naturalAbundance":0.00000134,"halfLife":null},{"massNumber":4,"symbol":"⁴He","name":"Helium-4","stability":"stable","naturalAbundance":0.99999866,"halfLife":null}]
6 carbon-isotopes Carbon Isotopes Two stable isotopes of carbon and radioactive carbon-14. 6 Carbon 炭素 C [{"massNumber":12,"symbol":"¹²C","name":"Carbon-12","stability":"stable","naturalAbundance":0.9893,"halfLife":null},{"massNumber":13,"symbol":"¹³C","name":"Carbon-13","stability":"stable","naturalAbundance":0.0107,"halfLife":null},{"massNumber":14,"symbol":"¹⁴C","name":"Carbon-14","stability":"radioactive","naturalAbundance":0,"halfLife":"5,700 years"}]
7 nitrogen-isotopes Nitrogen Isotopes Two stable isotopes of nitrogen (nitrogen-14, nitrogen-15). 7 Nitrogen 窒素 N [{"massNumber":14,"symbol":"¹⁴N","name":"Nitrogen-14","stability":"stable","naturalAbundance":0.99636,"halfLife":null},{"massNumber":15,"symbol":"¹⁵N","name":"Nitrogen-15","stability":"stable","naturalAbundance":0.00364,"halfLife":null}]
8 oxygen-isotopes Oxygen Isotopes Three stable isotopes of oxygen (oxygen-16, oxygen-17, oxygen-18). 8 Oxygen 酸素 O [{"massNumber":16,"symbol":"¹⁶O","name":"Oxygen-16","stability":"stable","naturalAbundance":0.99757,"halfLife":null},{"massNumber":17,"symbol":"¹⁷O","name":"Oxygen-17","stability":"stable","naturalAbundance":0.00038,"halfLife":null},{"massNumber":18,"symbol":"¹⁸O","name":"Oxygen-18","stability":"stable","naturalAbundance":0.00205,"halfLife":null}]
26 iron-isotopes Iron Isotopes Four stable isotopes of iron (iron-54, iron-56, iron-57, iron-58). 26 Iron 鉄 Fe [{"massNumber":54,"symbol":"⁵⁴Fe","name":"Iron-54","stability":"stable","naturalAbundance":0.05845,"halfLife":null},{"massNumber":56,"symbol":"⁵⁶Fe","name":"Iron-56","stability":"stable","naturalAbundance":0.91754,"halfLife":null},{"massNumber":57,"symbol":"⁵⁷Fe","name":"Iron-57","stability":"stable","naturalAbundance":0.02119,"halfLife":null},{"massNumber":58,"symbol":"⁵⁸Fe","name":"Iron-58","stability":"stable","naturalAbundance":0.00282,"halfLife":null}]
82 lead-isotopes Lead Isotopes Four stable isotopes of lead (lead-204, lead-206, lead-207, lead-208). 82 Lead 鉛 Pb [{"massNumber":204,"symbol":"²⁰⁴Pb","name":"Lead-204","stability":"stable","naturalAbundance":0.014,"halfLife":null},{"massNumber":206,"symbol":"²⁰⁶Pb","name":"Lead-206","stability":"stable","naturalAbundance":0.241,"halfLife":null},{"massNumber":207,"symbol":"²⁰⁷Pb","name":"Lead-207","stability":"stable","naturalAbundance":0.221,"halfLife":null},{"massNumber":208,"symbol":"²⁰⁸Pb","name":"Lead-208","stability":"stable","naturalAbundance":0.524,"halfLife":null}]
92 uranium-isotopes Uranium Isotopes Three naturally occurring radioactive isotopes of uranium (uranium-238, uranium-235, uranium-234). 92 Uranium ウラン U [{"massNumber":238,"symbol":"²³⁸U","name":"Uranium-238","stability":"radioactive","naturalAbundance":0.9927,"halfLife":"4.468 billion years"},{"massNumber":235,"symbol":"²³⁵U","name":"Uranium-235","stability":"radioactive","naturalAbundance":0.0072,"halfLife":"704 million years"},{"massNumber":234,"symbol":"²³⁴U","name":"Uranium-234","stability":"radioactive","naturalAbundance":0.000055,"halfLife":"245,500 years"}]
94 plutonium-isotopes Plutonium Isotopes Major artificial radioactive isotopes of plutonium (plutonium-238, 239, 240, 241, 242, 244). 94 Plutonium プルトニウム Pu [{"massNumber":238,"symbol":"²³⁸Pu","name":"Plutonium-238","stability":"radioactive","naturalAbundance":0,"halfLife":"87.7 years"},{"massNumber":239,"symbol":"²³⁹Pu","name":"Plutonium-239","stability":"radioactive","naturalAbundance":0,"halfLife":"24,110 years"},{"massNumber":240,"symbol":"²⁴⁰Pu","name":"Plutonium-240","stability":"radioactive","naturalAbundance":0,"halfLife":"6,560 years"},{"massNumber":241,"symbol":"²⁴¹Pu","name":"Plutonium-241","stability":"radioactive","naturalAbundance":0,"halfLife":"14.4 years"},{"massNumber":242,"symbol":"²⁴²Pu","name":"Plutonium-242","stability":"radioactive","naturalAbundance":0,"halfLife":"373,300 years"},{"massNumber":244,"symbol":"²⁴⁴Pu","name":"Plutonium-244","stability":"radioactive","naturalAbundance":0,"halfLife":"80.8 million years"}]

A list of isotopes (stable and radioactive) for major chemical elements.