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How long does it take for 60 of a gas radon to decay when it has a half life of 3.82 days?
Wiki User
∙ 6y ago
Half-life time of a radioactive element is the time required for the decomposition of half of the actual mass of the element.
"Half life of radon is 3.8 days."
This means that a particular mass of radon is reduced to half its mass in 3.8 days. The half-life period of an element does not depend upon the original mass of the element. This means that 10gms of radon will become 5gms of radon is 3.8 days, and 80gms of radon will become 40gms in 3.8 days.
Wiki User
∙ 16y ago
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What is the half life of radon 222?
The half life of 222Rn, the naturally found isotope of radon, is 3.8235 days.
Is radon-222 an earth mineral?
No, Radon is an element. 222Rn belongs to the radium and uranium-238 decay chain, and has a half-life of 3.8235 days.
How many days are required for 200 grams of radon 222 to decay to 50.0 grams?
7.64 it is the half life of radon-222 multipled by 2
What decays producing radon?
== == 222Rn is the only natural isotope of radon. (Several other artificial isotopes are known, but about the only place they exist is in the physics lab. Let's work with the natural one.) This isotope is itself the daughter of 226Radium, by the way. (226Ra had to decay to create 222Rn.) The decay scheme for radon is as follows: 222Rn will alpha decay (half life of 3.8 days) into 218Po 218Po will alpha decay (half life of 3.1 minutes) into 214Pb 214Pb will beta decay (half life of 27 minutes) into 214Bi 214Bi will beta decay (half life of 20 minutes) into 214Po 214Po will alpha decay (half life of 160 microseconds) into 210Pb 210Pb will beta decay (half life of 22 years) into 210Bi 210Bi will beta decay (half life of 5 days) into 210Po 210Po will alpha decay (half life of 138 days) into 206Pb (stable) In case it isn't obvious, radon and its daughters are all radioactive and pose a hazard. (Save lead, 206Pb, the final daughter.) And because radon is a gasand is inert, it travels around in the air and can be inhaled. And an airborne radionuclide is harder to defend against and contain than a liquid or solid one. Radon is suspected of accounting for a high percentage of lung cancer deaths since exposure to radiation can cause cancer. What really sucks is that if you breathe in a radon atom and it decays in your lungs, it changes into a polonium atom while irratiating you. You probably can't get rid of the polonium atom (it's a metallic solid), and it is also radioactive. An atom of radon must undergo 8radioactive decay events to get to a stable isotope of lead. That means if a radon atom you inhale decays, you get that shot of radiation, and you will probably get 7 more shots of radiation - in the same general location - before things are over. Lots of biological damage can occur. And these decay events involve some very damaging particulate radiation (alpha and beta radiation). It's about the worst of the worst.
The radioactive decay constant is blank days -1 if the radioisotope has a half-life of 52 days?
0.013
How many days are required for 200 grams of radon-222 to decay to 50 grams?
7.64 it is the half life of radon-222 multipled by 2
What is the half life of radon 222?
The half life of 222Rn, the naturally found isotope of radon, is 3.8235 days.
Is radon-222 an earth mineral?
No, Radon is an element. 222Rn belongs to the radium and uranium-238 decay chain, and has a half-life of 3.8235 days.
How many days are required for 200 grams of radon 222 to decay to 50.0 grams?
7.64 it is the half life of radon-222 multipled by 2
What decays producing radon?
== == 222Rn is the only natural isotope of radon. (Several other artificial isotopes are known, but about the only place they exist is in the physics lab. Let's work with the natural one.) This isotope is itself the daughter of 226Radium, by the way. (226Ra had to decay to create 222Rn.) The decay scheme for radon is as follows: 222Rn will alpha decay (half life of 3.8 days) into 218Po 218Po will alpha decay (half life of 3.1 minutes) into 214Pb 214Pb will beta decay (half life of 27 minutes) into 214Bi 214Bi will beta decay (half life of 20 minutes) into 214Po 214Po will alpha decay (half life of 160 microseconds) into 210Pb 210Pb will beta decay (half life of 22 years) into 210Bi 210Bi will beta decay (half life of 5 days) into 210Po 210Po will alpha decay (half life of 138 days) into 206Pb (stable) In case it isn't obvious, radon and its daughters are all radioactive and pose a hazard. (Save lead, 206Pb, the final daughter.) And because radon is a gasand is inert, it travels around in the air and can be inhaled. And an airborne radionuclide is harder to defend against and contain than a liquid or solid one. Radon is suspected of accounting for a high percentage of lung cancer deaths since exposure to radiation can cause cancer. What really sucks is that if you breathe in a radon atom and it decays in your lungs, it changes into a polonium atom while irratiating you. You probably can't get rid of the polonium atom (it's a metallic solid), and it is also radioactive. An atom of radon must undergo 8radioactive decay events to get to a stable isotope of lead. That means if a radon atom you inhale decays, you get that shot of radiation, and you will probably get 7 more shots of radiation - in the same general location - before things are over. Lots of biological damage can occur. And these decay events involve some very damaging particulate radiation (alpha and beta radiation). It's about the worst of the worst.
Will a sample of radon-222 eventually all disappear?
Maybe, and maybe not. It depends on how large the sample is and how long "eventually" is. Though radon has a modest half-life, it still takes a long, long time for any appreciable amount to decay to the point where we can't detect it. Remember that any "sample" will contain radon atoms numbered in many powers of ten. Then there's the fact that a half-life is a statistically derived amount of time, meaning that a single given atom or a small number of atoms won't "obey" the "rule" of the half-life and decay "on schedule" per the time cited. All the atoms of radon-222 may not disappear "eventually" as was asked. But for all practical purposes, a sample might be said to disappear over geologic time. Radon-222, an isotope of the radioactive inert gas, has a half-life of 3.8235 days. That means that in 3.8235 days, half of the 222Rn sample will be gone. In another 3.8235 days, half of that remaining 222Rn will be gone. And so on. Note that the radon-222 is undergoing radioactive decay to "disappear" as was asked. Additionally, each radon-222 atom that decays will have to undergo another 7 decay events to become a stable isotope of lead. And all of this is radioactive decay.
Does fermium-257 undergo nuclear decay?
Alpha decay to californium 253. The half life of fermium 257 is 100.5 days.
The radioactive decay constant is days-1 if the radioisotope has a half-life of 52 days?
0.013
The radioactive decay constant is days-1 if the radioisotope has a half-life of 431 days?
0.00161
The radioactive decay constant is days-1 if the radioisotope has a half-life of 163 days?
0.00425
The radioactive decay constant is blank days -1 if the radioisotope has a half-life of 52 days?
0.013
The half-life of radon-222 is about four days. After how many days is the amount of radon-222 equal to one-sixteenth of its original amount?
Let's step through the half-life of radon to see how it works. Radon-222 starts at full strength. In four days (its half-life), it is at half strength. In four more days, it is again at half strength (of the half strength) for a total of 1/4 strength. In four more days, it is again half the strength (of the 1/4 strength) for a total of 1/8 strength. In four more days, it is another half life weaker, for a total of 1/16 strength. In 16 days, this isotope of radon has just 1/16th the original radiation.
