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

Polonium isotope [itex]{}_{84}^{210}Po[/itex] is unstable and emits a 5.30MeV [itex]\alpha[/itex] particle.

i. Indentify the daughter nuclide (using a periodic table)

ii. Calculate the mass of the daughter nuclide.

2. Relevant equations

Mass of neutral [itex]{}^{210}Po[/itex] nuclide is 209.9829u

Mass of [itex]{}^{4}He[/itex] is 4.0026u

Note that taking the mass of the alpha particle as the mass of a neutral helium atom.

3. The attempt at a solution

i. [tex]{}_{84}^{210}Po \rightarrow {}_{82}^{206}? + {}_{2}^{4}\alpha + Q[/itex]

By looking at a periodic table, identified the daughter nuclide as: [itex]{}_{82}^{206}Pb[/itex]

.. correct?

ii. Not sure how to do this. The mass of both sides of the equation must be the same I assume. Already know the mass of the alpha particle, it's the mass of the helium atom given. The mass of the neutral Po I assumed would refer to the nuclide after the alpha particle has been emitted, but this is Pb not Po.

Not sure how to get the values required to perform the calculation, which I guess would be:

[tex]M({}_{84}^{210}Po) - M({}_{2}^{4}\alpha) = M({}_{84}^{210}Pb)[/itex]

So 2 things with this part, how to I get the values of the masses? and is the equation to calculate the mass of the daughter nuclide correct?

Any help really will be appreciated.

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# Homework Help: Polonium Alpha Decay

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