CAPE Physics Unit 2 · 2008 (Rest of Region) · Paper 1 · Question Q45

A uranium nucleus ^{238}_{92}\text{U} decays by a series of emissions into ^{222}_{86}\text{Rn}. Which of the following emissions could have occurred during the series of decay from uranium-238 to radon-222?

1. (A)4\ \alpha\text{ particles and } 3\ \beta\text{-particles}
2. (B)4\ \alpha\text{ particles, } 2\ \beta\text{-particles and } 2\ \gamma-\text{rays}
3. (C)3\ \alpha-\text{particles, } 4\ \beta-\text{particles and } 2\ \gamma-\text{rays}
4. (D)3\ \alpha\text{ particles and } 4\ \gamma\text{ rays}