Rhenium was discovered in 1925 by the German chemists Walter Noddack, Ida Tacke (later Ida Noddack), and Otto Berg. They detected rhenium using X-ray spectroscopy in platinum ore and other minerals and named it after the river Rhine in Europe.
Ida Tacke was one of the first women to study chemistry in Germany, and she played a key role in the discovery alongside her husband Walter Noddack and Otto Berg. The discovery involved analyzing about 1800 mineral samples before successfully isolating the element rhenium.
Thus, the credited discoverers of rhenium are Walter Noddack, Ida Tacke- Noddack, and Otto Berg in 1925.