SCIENCE
ENVIRONMENTAL SCIENCES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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a neutron splits a uranium-235 atom, forming new elements and releasing several neutrons, plus energy.
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a neutron splits a daughter nucleus, thus creating uranium-234.
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radioactivity causes the neutron of a uranium-235 atom to split in two.
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a lightweight atom combines with another lightweight atom to create a single, heavy atom.
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Detailed explanation-1: -A uranium-235 atom absorbs a neutron and fissions into two new atoms (fission fragments), releasing three new neutrons and some binding energy. 2. One of those neutrons is absorbed by an atom of uranium-238 and does not continue the reaction.
Detailed explanation-2: -When a U-235 nucleus absorbs an extra neutron, it quickly breaks into two parts. This process is known as fission (see diagram below). Each time a U-235 nucleus splits, it releases two or three neutrons. Hence, the possibility exists for creating a chain reaction.
Detailed explanation-3: -Uranium-235 (U-235) is one of the isotopes that fissions easily. During fission, U-235 atoms absorb loose neutrons. This causes U-235 to become unstable and split into two light atoms called fission products.
Detailed explanation-4: -Fission occurs when a neutron slams into a larger atom, forcing it to excite and split into two smaller atoms-also known as fission products. Additional neutrons are also released that can initiate a chain reaction. When each atom splits, a tremendous amount of energy is released.
Detailed explanation-5: -When the uranium 235 nucleus undergoes fission, the nucleus splits into two smaller nuclei along with a few neutrons on a average of 2.43 neutrons per fission and the release of energy in the form of heat and gama rays.