Radon ·
The Radioactive Gas from Rock
un
seel
.com · ²²&sup6;Ra → ²²²Rn · alpha decay · noble gas
Half-life
3.82 days
α energy
5.49 MeV
phase
—
²²&sup6;Ra in rock
²²²Rn gas
α particle
²¹&sup8;Po progeny
Soil / rock
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.com · Radon Decay