What is the correct symbol that is missing from the radioactive decay reaction below, and what type of decay is it? Bi →-- +He 83 207 81 Tl - Alpha Decay 207 82 Pb - Alpha Decay 207 Pb- Gamma Decay 82 207 81 Tl - Beta Decay

If the half-life of a radioactive substance is 4 days how much material will remain after 16 days if the initial mass is 100 g? O 6.25 g O 3.125 g O 12.5 g O 25 g

Classify the following nuclear reactions by the type of nuclear decay represented. Alpha Decay INa IMg + -ß Beta Decay 13N - 1%C + B 196Pt + -fe→ 19위Ir → 1861r 78 Positron Emission 2Bi – 20TI + ja 223 Fr → 223 Ra + -9ß 87 234U 230Th + ja 92 Electron Capture

||| Understanding radioactive half life sample A medical technician is working with the four samples of radionuclides listed in the table below. Initially, each sample contains 19.00 umol of the radionuclide. First, order the samples by decreasing initial radioactivity. Then calculate how long it will take for the amount of radionuclide in each sample to decrease to 1/4 of the initial amount. A B C D Explanation symbol 33 15 188 75 127 54 227 89 radionuclide P Re Xe Ac Check half-life 25. days 17. hours 36. days 22. years initial radioactivity (choose one) B (choose one) (choose one) O (choose one) e time for amount of radionuclide to decrease to 1/4 of initial amount X days hours days years S MacBook Pro 0/3 Kimberly V ( Ⓒ2023 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center | Accessibility ?圖□ 圆图 olo Ar