Posted by **Shay** on Wednesday, September 26, 2012 at 10:13am.

Radon-222 undergoes alpha decay.what is the nuclear equation

- chemistry -
**DrBob222**, Wednesday, September 26, 2012 at 2:23pm
First number just before Rn is atomic number; number following symbol is mass number.

86Rn222 ==> 2He4 + nXm

We we need to evaluate for n and m. To do that we remember that the atomic numbers must add on both sides and the mass numbers must add up on both sides.

86 = 2+n; therefore, n = 84

222 = 4 + m; therefore, m = 218

Now we look on the periodic table and find element number 84. That is Po; therefore, element X is Po so the equation in full is

86Rn222 = 2He4 + 84Po218

## Answer this Question

## Related Questions

- Chemistry - Write a nuclear equation for the following: Iodine 131 undergoes ...
- chemistry 1405 - how to write a nuclear equation for the nuclear decay of Ra-226...
- nuclear physics - An atom of Radium-228 transmutes to radon-222. Write the ...
- Physical Science - 3. Radioactive decay of nuclei often involves several decays ...
- Physical Science - 1. Which equation correctly shows beta decay? (A) 210/82 Pb...
- nuclear chem - i need help solving this. Can you guys show me how it's done. ...
- Chemistry - The half-life of radon-222 is 3.82 days. If a sample of gas contains...
- chem - Potassium-40 undergoes three different modes of radioactive decay (Beta ...
- Chemistry - 40 years ago, the first time a vehicle was driven over an ...
- Chemistry - I'm a bit confused as to when I should use an alpha particle and ...

More Related Questions