Neptunium is located between uranium and plutonium which are 2 very radioactive materials. Because of its number of protons (92-94) and its large size, neptunium can go through nuclear fission. It is not as commonly used as the other 2 radioactive elements but is still important because it is produced from the nuclear reaction. This nuclear reaction can produce harmful radioactive waste that can last for millions of years. The majority of neptunium is created as a byproduct of reactions in nuclear power plants. Neptunium has never been actually used and has only been considered to be used as a fissile nuclear fuel.
More info about the International Year of the Periodic Table (IYPT) in crystals project:
This project (#IYPTCrystals) is part of the International Year of the Periodic Table celebration (#IYPT2019), read more about the project here. You can follow us on social media using #IYPTCrystals and learn more about the wonders of crystals by following the CCDC on Twitter @ccdc_cambridge on Facebook ccdc.cambridge, on Instagram ccdc_cambridge or on YouTube CCDCCambridge.
If you want to find out more about some of the terms and concepts we have a Frequently Asked Questions Page.