²³⁸U is an unstable nuclide that undergoes multiple decay events. One sequence is $\beta$ - $\beta$ - $\alpha$ - $\alpha$ - $\alpha$ . The product nuclide is

Question

Quizplus · Accepted Answer

The sequence involves two beta decays and three alpha decays. Beta decay does not change the mass number but increases the atomic number by 1. Alpha decay decreases the mass number by 4 and the atomic number by 2. Starting with mass number 1238 and atomic number 92 (U), after two beta decays (atomic number increases to 94) and three alpha decays (mass number decreases by 12 to 1226 and atomic number decreases by 6 to 88), the product is Rn (Radon) with mass number 1226 and atomic number 88.

238U Is an Unstable Nuclide That Undergoes Multiple Decay Events β\betaβ

²³⁸U Is an Unstable Nuclide That Undergoes Multiple Decay Events $\beta$