NCERT Example 13.3 - Nuclei
Question: Find the Q-value and kinetic energy of the emitted α-particle in the α-decay of ²²⁶Ra. Given masses: ²²⁶Ra = 226.02540 u, ²²²Rn = 222.01750 u, ⁴He = 4.00260 u.
Answer: Q ≈ **4.94 MeV**; KE_α ≈ **4.85 MeV**.
Full step-by-step NCERT solution with diagrams on Something by Zero.