Problem 6.236

The alpha-decay of $\mathrm{Po}^{210}$ nuclei (in the ground state) is accompanied by emission of two groups of alpha-particles with kinetic energies 5.30 and $4.50 \mathrm{MeV}$. Following the emission of these particles the daughter nuclei are found in the ground and excited states. Find the energy of gamma-quanta emitted by the excited nuclei.