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Because in the body alpha particles interact directly with the organism cells.

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Kip Strosin

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Q: Why are alpha radiation are more dangerous inside the body than outside the body?
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Why are radioactive elements which emit alpha particles more dangerous outside the body than inside?

It is the opposite. Radioactive elements which emit alpha particles are more dangerous inside the body than outside. Alpha particle radiation could be stopped by skin. So, is not dangerous outside the body. However, any contamination by those radioactive elements if got inside through mouth, or any other means, then the alpha particle radiation could be harmful to the very delicate inside body tissues.


Which form of nuclear radiation is least damaging to humans?

Alpha, from outside the body, because alpha is stopped by the skin, a sheet of paper, or a few inches of air. From inside the body, however, alpha is one of the most dangerous forms of radiation.


Which type of radiation is most dangerous if it's inhaled or swallowed?

alpha radiation


What is more dangerous gamma or alpha rays?

alpha radiation is more dangerous than beta or gamma if ingested or inhaled because its power to ionize (or to disrupt atoms) is 20x than that of beta and gamma. but if the source is outside the body or at a distance gamma radiation is much dangerous because it could penetrate thick walls.


What is the ionizing power of alpha beta gamma?

Of alpha, beta and gamma radiation, gamma radiation has the greater ability to penetrate either shielding or living tissue. The penetration issue aside, a contact source that is an alpha emitter can do more tissue damage than beta or gamma radiation. Alpha and beta radiation are particulate radiation. They involve a particle. Gamma radiation is electromagnetic radiation of high energy. Use the links below to learn more about each type of radiation and get a handle on what's up.

Related questions

Why is alpha radiation more dangerous than beta rediation when the source of the radiation is inside the body?

Alpha radiation cannot get pass through our body as it cannot penetrate through things. Beta can penetrate through things better than alpha. So if alpha is inside our body then it cannot get outside our body and therefore it becomes dangerous.


Why materials that emit alpha radiation are more dangerous inside the body than outside?

Because in the body alpha particles interact directly with the organism cells.


Why are radioactive elements which emit alpha particles more dangerous outside the body than inside?

It is the opposite. Radioactive elements which emit alpha particles are more dangerous inside the body than outside. Alpha particle radiation could be stopped by skin. So, is not dangerous outside the body. However, any contamination by those radioactive elements if got inside through mouth, or any other means, then the alpha particle radiation could be harmful to the very delicate inside body tissues.


Which form of nuclear radiation is least damaging to humans?

Alpha, from outside the body, because alpha is stopped by the skin, a sheet of paper, or a few inches of air. From inside the body, however, alpha is one of the most dangerous forms of radiation.


Are alpha radiation dangerous?

Any electromagnetic radiation can be dangerous. Alpha waves are higher on the radiation scale than x-rays so yes, they are dangerous.


Which type of radiation is most dangerous if it's inhaled or swallowed?

alpha radiation


What is more dangerous gamma or alpha rays?

alpha radiation is more dangerous than beta or gamma if ingested or inhaled because its power to ionize (or to disrupt atoms) is 20x than that of beta and gamma. but if the source is outside the body or at a distance gamma radiation is much dangerous because it could penetrate thick walls.


Gamma radiation is it safe to inject into a human but alpha particles would be very dangerous?

Generally no radiation is safe. You cannot "inject" radiation into anything because it is the product of various unstable nuclei decaying. Alpha radiation is much more ionising than gamma, but much less penetrating than it. That makes it more dangerous if it is inside your body; it can be stopped by skin. Therefore you would have to swallow a sample of a radioactive material. However, gamma radiation is always emitted together with alpha or beta radiation.


Why is the alpha radiation the weakest?

Alpha radiation is not necessarily the "weakest" radiation. Alpha radiation is the emmanation of helium nuclei, which is two protons and two neutrons. As such, an alpha particle has a mass of 4 and a charge of +2. As a result, it interacts more readily than any of the other forms of radiation. This means that alpha can be stopped with a few inches or air, or even with a sheet of paper. That does not mean, however, that alpha is the least dangerous - if it is ingested, such as into the lungs, it will be in close proximity to sensitive tissues, making it one of the most dangerous forms of radiation. Its penetrating power is certainly the least, but, "weakest", not by a long shot.


What is the ionizing power of alpha beta gamma?

Of alpha, beta and gamma radiation, gamma radiation has the greater ability to penetrate either shielding or living tissue. The penetration issue aside, a contact source that is an alpha emitter can do more tissue damage than beta or gamma radiation. Alpha and beta radiation are particulate radiation. They involve a particle. Gamma radiation is electromagnetic radiation of high energy. Use the links below to learn more about each type of radiation and get a handle on what's up.


Is alpha radiation a ionization radiation?

Yes, alpha radiation is an ionizing radiation.


What is the relative danger of a 1.1 mev gamma ray and a 1.1 mev alpha?

From an external source the gamma is more penetrating so would be more dangerous. If ingested the alpha becomes more dangerous, as there is no shielding inside your body, and the alpha particles have more biological effect. Of course the size of the source also matters, but alpha particles are easily stopped when outside your body