Final answer:
The natural abundance of Gallium-71 (71Ga) is approximately 39.9% in a sample of natural Gallium. The materials provided talk about uranium isotopes and other topics, which do not directly answer the question about Gallium's isotopic abundance.
Step-by-step explanation:
The question asks about the natural abundance of the isotope Gallium-71 (71Ga). However, the information provided in the reference text does not directly concern the natural abundance of 71Ga. Instead, it discusses various topics related to uranium isotopes and their half-lives, such as Uranium-235 (235U), Uranium-238 (238U), and Uranium-234 (234U). The reference also includes a scenario involving the isotopes of neon in the solar wind, a calculation related to tritium (³H) decay, and other concepts involving radioactivity. To address the student's question with the accurate information, we must consult reliable scientific data sources that provide the natural isotopic abundances of elements.
In general, the natural isotopic abundance of an element is the proportion of a particular isotope relative to all isotopes of that element present in a natural sample. The percentage is based on the isotope's occurrence as found in Earth's crust, atmosphere, or oceans. For Gallium (Ga), which has two stable isotopes, Gallium-69 (69Ga) and Gallium-71 (71Ga), the natural abundance is approximately 60.1% for 69Ga and 39.9% for 71Ga.
Gallium's isotopic abundance can be relevant when analyzing materials that contain Gallium or when using isotopic compositions in scientific research, such as nuclear medicine applications, where specific isotopes may be used for diagnostics or treatment.