(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Ra (mass number 226 atomic number 88) undergoes alpha decay to form radon. If the mass of a radium nucleus is 3.753152x10^{-25}kg, the mass of the radon nucleus is 3.686602x10^{-25}kg and the mass of the alpha particle is 6.646322x10^{-27}kg, find the energy released in the alpha decay in MeV.

If the ratio of the mass of the products of the decay is equal to the ratio of their mass numbers, find the kinetic energy of both products after the decay

charge of electron=1.6x10^{-19}C

speed of light in a vacuum=3x10^{8}ms^{-1}

3. The attempt at a solution

So for the first part I got .488MeV using the mass defect and E=mc^{2}(could well be wrong) but im stuck on the second part i dont understand what they are talking about ratios for?

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Radioactive decay question Ra to Rn

**Physics Forums | Science Articles, Homework Help, Discussion**