-
Anonymous users2024-02-16Nuclear fuel in nature.
The nuclides are: <>
1. Uranium-235
Content: The average amount of uranium in the earth's crust is: Acidic igneous rocks.
Medium uranium is the highest, averaging (; The second highest among the neutral igneous rocks is (; Very low in mafic and ultramafic igneous rocks, respectively (and (3 6) 10.
The average amount of uranium in sedimentary rocks varies widely, from 8 10-6. Rock salt.
Carbonate rocks and quartz sandstones.
The content of medium uranium is low, and the content is higher in claystone, phosphate block rock and black shale.
2. Deuterium. Content: All hydrogen atoms present in nature.
It is deuterium, which is less abundant.
Fissile nuclides: uranium-235, uranium-238
Plutonium-239, plutonium-232, etc.
-
Anonymous users2024-02-15First of all, let's be clear: the nuclear fuel is U-235.
Uranium is an element with atomic number 92 and its element symbol U, which is the heaviest element that can be found in nature. There are three isotopes in nature, all radioactive, with a very long half-life (hundreds of millions of years billions of years), and the largest stock on the earth is uranium-238 (accounted for, and then uranium-235, which can be used as a fuel for nuclear power generation) (occupy, the least natural uranium is uranium-234 (occupy, uranium has 12 artificial isotopes (uranium-226 uranium-240).
Fissile nuclides:
Definition: A fissile nuclide that can cause fission of its nucleus by bombardment with neutrons of any energy. The natural fissile nuclide is U-235, and the man-made fissionable nuclides are U-233 and Pu-239.
-
Anonymous users2024-02-14The nuclides of nuclear fuel in nature are:
1. Uranium-235
Content: The average dust content of uranium in the earth's crust is. The highest amount of uranium was found in acidic igneous rocks, with an average of (; The second highest among the neutral igneous rocks is (; Very low in mafic and ultramafic igneous rocks, respectively (and (3 6) 10.
The average amount of uranium in sedimentary rocks varies widely, from 8 10-6. Uranium is found in rock salt, carbonate rocks, and quartz sandstones, and higher in claystone, phosphorite, and black shale.
2. Deuterium. Content: All the hydrogen atoms present in nature are deuterium and are less abundant.
Fissile nuclides: uranium-235, uranium-238, plutonium-239, plutonium-232, etc.
-
Anonymous users2024-02-13Which of the following is a natural occurrence in nature that is prone to the fission of the nucleus Zen: () aUranium-235
b.Uranium-233
c.Plutonium-239
Correct Answer: a
-
Anonymous users2024-02-12Uranium-235, uranium-238 and plutonium-239 are nuclear fuels capable of nuclear fission. Broadly speaking, thorium-232 and uranium-238 are also nuclear fuels, and deuterium and tritium are nuclear fuels that can undergo nuclear fusion.
Nuclear fuel, a material that produces practical nuclear energy through nuclear fission or fusion in a nuclear reactor. The fission of heavy nuclei and the fusion of light nuclei are the two main ways to obtain practical nuclear energy from uranium rods. Uranium-233, uranium-235, uranium-238, and plutonium-239 are nuclear fuels that can undergo nuclear fission, also known as fission nuclear fuel collapse; Nuclear fuels such as deuterium and tritium that can undergo nuclear fusion, also known as fusion nuclear fuel.
Nuclear fuel, a material that can be used in nuclear reactors to produce practical nuclear energy through nuclear fission or nuclear fusion. The fission of heavy nuclei and the fusion of light nuclei are the two main ways to obtain practical nuclear energy from uranium rods. Uranium-235, uranium-238 and plutonium-239 are nuclear fuels that can undergo nuclear fission, also known as fission nuclear fuel.
Among them, uranium-235 exists in nature, while uranium-233 and plutonium-239 are artificial nuclides formed by thorium-232 and uranium-238 after absorbing neutrons, respectively. Broadly speaking, thorium-232 and uranium-238 are also nuclear fuels. Deuterium and tritium are nuclear fuels that can undergo nuclear fusion, also known as fusion nuclear fuel.
Deuterium is found in nature, and tritium is an artificial nuclide formed after lithium 6 absorbs neutrons. Nuclear fuel produces much more energy when it is "burned" in a nuclear reactor than fossil fuels, with 1 kilogram of uranium-235 producing about 2,500 tons of coal when fully fissioned.
-
Anonymous users2024-02-11The sail that can be used as nuclear fuel has a Shen Feng ().
a.Uranium wide sedan -233
b.Thorium-232
c.Thorium-233
d.Uranium-232
Correct answer: ab
-
Anonymous users2024-02-10Analysis] is very different.
The conditions required for nuclear fusion to occur are ultra-high temperatures, ultra-high pressures, and nuclear energy comes from inside the nucleus. [Reviews].
The positively charged protons are crowded into a very small nucleus, and there is a large Coulomb repulsion force between the protons due to the mutual repulsion of the same charges. Therefore, protons and neutrons in the nucleus are tightly bound together by a strong nuclear force, and this nuclear force is the "source" that can produce a huge amount of nuclear energy.
-
Anonymous users2024-02-09Nuclear reactions include fusion and fission, and heavy atom fission technology is used now, using the energy produced by uranium fission, and in the future, fusion technology will be used, that is, the energy produced by the fusion of hydrogen and helium atoms, and these fusion light atomic fuels will be fissioned.
Fission reaction. <>
Polystool judgment reaction.
-
Anonymous users2024-02-08Answer]: The greater the specific binding energy (average binding energy) of the nucleus of the nucleus, the more stable the nucleus, not the greater the binding energy, and the item A is false. Only some very massive nuclei, such as uranium, thorium and plutonium, can undergo nuclear fission, and item b is wrong.
The mass is less than 32, all because of decay, and the decay mass is reduced by 4 at one time, so the number of decays is (238-206) 4=8 times. Only the number of protons will decrease by 2 8=16 when decaying, and the number of protons will increase by 1 when decaying, so the number of decays is 82+16-92=6 times, and the c term is correct. When decay occurs, the number of protons decreases by 2, the number of masses decreases by beats 4, so the number of neutrons decreases by 2, and the d term is wrong.
Found in the rainforests of Central and South America, a flower resembles bright red lips that will only exist for a brief period of time before the whole flower opens. There is also the orchid, which is a small monkey-faced orchid, and its flowers take the form of a monkey's face. There is also a kind of flower that resembles a ballet flower that spins on tiptoe in the wild. >>>More
In nature, there are three rare types of clouds: milky clouds, Altocumulus clouds, and perforated clouds. >>>More
The chemical composition of water, if viewed by mass percentage, contains hydrogen and oxygen. If you look at it by volume, there are two parts hydrogen and one part oxygen. The water molecules that exist alone are called single water molecules, and the association of water molecules can form double water molecules, triwater molecules, etc. >>>More
It must be an emperor penguin, anyway, I was shocked when I saw it, the penguins breed once a year, and it takes a lot of physical strength to lay eggs, and then throw the eggs to my husband after laying eggs, and I even ran into the sea to eat, and it was two months, what are the male penguins doing in these two months. Hatch. Because they are hiding from natural predators, the environment where they lay eggs is relatively harsh and cold, so if the eggs are placed directly on the ground, they will freeze. >>>More
Lighthouse jellyfish, red sea urchins, sea turtles, macaws, etc. In fact, many animals in nature are long-lived, and what is even more strange is that water-related animals are even longer-lived, especially animals living in the deep sea, and their lifespan is generally longer than that of animals on land. Let me give you a list of some animals that have a long lifespan. >>>More