What is the mass difference of a 715N^{15}_{\ 7}\text{N} 715N nucleus?
0.12266 u0.12266\text{ u}0.12266 u
0.12405 u0.12405\text{ u}0.12405 u
0.12032 u0.12032\text{ u}0.12032 u
0.11893 u0.11893\text{ u}0.11893 u
128 exam-style questions on AQA A Level Physics Radioactivity (A-level only), covering Rutherford scattering (A-level only), $\alpha$ , $\beta$ and $\gamma$ radiation (A-level only), Radioactive decay (A-level only), Nuclear instability (A-level only), Nuclear radius (A-level only), Mass and energy (A-level only), Induced fission (A-level only), and Safety aspects (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.