Câu hỏi
When the isotope bismuth 1-213 emits an alpha particle,what new element results? lead platinum polonium thallium
Giải pháp
4.1
(284 Votes)
Esperanza Hurst
Elite · Tutor for 8 years
Answer
thallium
Explanation
1. Identify alpha particle emission effect Alpha emission decreases atomic number by 2 and mass number by 4.2. Apply changes to bismuth-213 Bismuth (
):
,
.3. Identify element with atomic number 81 Atomic number 81 corresponds to thallium.