👉 Lutetium is a chemical element with the symbol Lu and atomic number 40. It is the lightest known chemical element, with only one proton (proton number 1) and no neutrons (neutron number 0). Lutetium has been used in radioactivity for centuries, particularly in nuclear medicine, where it is used to generate gamma radiation.
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What is the definition of Lutetium? 🙋
👉 Lutetium is a radioactive isotope of the element lanthanum. It has the symbol Lu and atomic number 83. Its chemical formula is Li2L1O16, with an atomic mass of approximately 197.94 amu. Lutetium is used in various applications such as medical imaging, nuclear medicine, and crystallography. It is also a source of isotopes for dating purposes.
