Yb-173, or Ytterbium-173, is a stable isotope of the element Ytterbium, which has an atomic number of 70. It is one of the several isotopes of Ytterbium, and it contains 103 neutrons in its nucleus. Yb-173 is used in various scientific applications, including research in nuclear physics and materials science. This isotope is notable for its unique properties, such as its ability to be used in laser technology and as a dopant in certain types of glass. Yb-173 plays a role in advancing our understanding of atomic interactions and contributes to the development of new technologies.