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Radium hot springs

Twenty isotopes are known. Radon-22, from radium, has a half-life of 3.823 days and is an alpha emitter Radon-220, emanating naturally from thorium and called thoron, has a half-life of 55.6 s and is also an alpha emitter. Radon-219 emanates from actinium and is called actinon. It has a half-life of 3.96 s and is also an alpha emitter. It is estimated that every square mile of soil to a depth of 6 inches contains about 1 g of radium, which releases radon in tiny amounts into the atmosphere. Radon is present in some spring waters, such as those at Hot Springs, Arkansas. [Pg.152]

See other pages where Radium hot springs is mentioned: [Pg.8]    [Pg.148]    [Pg.148]    [Pg.16]    [Pg.8]    [Pg.148]    [Pg.148]    [Pg.16]    [Pg.679]    [Pg.671]    [Pg.108]    [Pg.76]    [Pg.721]    [Pg.659]    [Pg.753]    [Pg.727]    [Pg.717]    [Pg.309]    [Pg.751]    [Pg.671]    [Pg.457]   
See also in sourсe #XX -- [ Pg.198 ]



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