How long after an atomic bomb explodes will it no longer be dangerous?

Question

Which isotopes are produces when an atomic bomb explodes? How long will they be dangerous?

Answer 1

I assume you're talking about a fission bomb, not a fusion bomb (H-bomb). Strontium 90 is one of the isotopes produced through nuclear fission of uranium. The ground around Chernobyl is still radioactive and lethal, and that was "just" a nuclear reactor meltdown that happened decades ago, which is now buried under thousands of tons of concrete. An atomic bomb would be far more devasting in its long-term effect because the ground is sucked up into the explosion and made radioactive, and will settle over a wide area. Some radioactive isotopes half a half-life of 100s of years. Nuclear tests were done underground. Other than the two relatively small nuclear weapons dropped on Japan, no above-ground test of a full-size megaton atomic bomb has been done to see how long an atomic bomb will be dangerous, so I don't think we really know what the long-term effects on the ground and the atmosphere would be.

Answer 2

it is very difficult 2 say that exactly.
coz physical and visible effects will vanish in a few years but the radiation released at the time of the explosion may cause mutations in the genes which can get transmitted to next generation and thus enter the gene pool. most of them cause various harmful defects so the effect perpetuates.
e.g. generations of the sufferers of Hiroshima explosion are still born with various defects which are quite lethal and have never been seen before

Answer 3

It would depend on the isotopes half-life, or the time it takes for one half of the product to decompose. Uranium bomb- probably 10,000 years.

Answer 4

There are 2 varieties: a million) fission bombs - artwork with tips from producing nuclear fission, it relatively is, it splits heavier nuclei (like uranium) to offer lighter nuclei. in this chain reaction, huge quantities of power are released interior the form of heat, mild, stress waves... 2) fusion bombs (like H-bomb) - artwork with tips from producing nuclear fusion, it relatively is, it fuses 2 lighter nuclei (like hydrogen) to offer heavier nuclei. It additionally releases particularly a lot of power.

Answer 5

I would think at least 50 years maybe 100 better not to use them at all.

Answer 6

As soon as the victim's soul leaves the body.

Answer 7

not sure, why dont you ask officials in japan?

Answer 8

30years i think