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Bukkake
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Why unstable nuclei with short half-lives have small or zero natural abundance?
It should be very clear why nuclei with short half-lives have small or zero natural abundance. They simply are simply too unstable to exist and will decay into a more stable form. Naturally abundant nuclei will have half lives that are longer than the age of the Earth.
What keeps atoms from fusing together?
It is the nulei which fuse. Nuclei are positively charged and thus repel each other. The kinetic energy of the nuclei must be very large for nuclei to be able to fuse, such as at the surface of the sun, where hydrogen nuclei fuse to form helium nuclei.
How is nuclear energy sustainable?
nuclear energy is produced by taking advantage of natural decay in large nuclei of atoms. atoms with large enough nuclei can only be produced by very large scale nuclear fusion such as stars during a supernova, and making it on earth would take enormous amounts of energy. So no, nuclear energy is not totally sustainable, but a small amount of fuel lasts a long time. For this reason energy can be stored by scientifically making large nuclei atoms and utilizing them later.
What is the most highly active atom in the nuclear atom system?
If you are looking for the most chemically reactive atom or element, it is fluorine. As regards which atom is the most active in its nucleus, there are a lot of very unstable radioactive atomic nuclei. Some are so unstable that they can only exist for a small fraction of a second, or, more properly, have an extremely short half-life.
Energy that is released from an atomic nucleus?
Nuclear energy is held in the strong force holding the protons and neutrons together. There are two ways to release it:Fission of large nuclei into smaller ones - large nuclei (e.g. Uranium-235) are inherently unstable and when struck by a neutron split into two smaller nuclei (fission products - usually about 1/3 and 2/3 the original atomic mass) and 2 or 3 free neutrons plus the released nuclear energy as kinetic energy of these particles.Fusion of small nuclei into larger ones - small nuclei (e.g. Deuterium) are very stable, but when highly compressed and heated to millions of degrees, they will combine with each other releasing nuclear energy as kinetic energy of the product nuclei.Elements in the middle (from iron to lead) cannot undergo either fusion or fission as they have no excess nuclear energy (you can think of them as nuclear "ash").
Why heavy nuclei are unstable?
Heavy, i.e. large, nuclei are unstable because their size is such that the attractive strong nuclear force starts to lose out over the repulsive effect of the electromagnetic interaction. The happens because the distance coefficient for the strong nuclear forces drops off more rapidly than does the electromagnetic interaction.
What is the difference between nuclear decay fission and fusion?
decay; alpha (helium nuclei), beta (electrons or positrons), or gamma (photons) are spontaneously ejected from unstable isotopesfission; very massive unstable isotopes split into two much lighter nuclei and a few neutrons are ejected, usually happens following capture of a neutron but in some isotopes can occur spontaneouslyfusion; very light nuclei merge forming heavier nuclei, can only occur at very high temperature and pressure
Why unstable nuclei with short half-lives have small or zero natural abundance?
It should be very clear why nuclei with short half-lives have small or zero natural abundance. They simply are simply too unstable to exist and will decay into a more stable form. Naturally abundant nuclei will have half lives that are longer than the age of the Earth.
What is the difference between nuclear decay and nuclear fission?
Nuclear decay is any spontaneous process where unstable nuclei release extra energy to arrive at a more stable state. Typical decay processes are Alpha, Beta, and Gamma. Some large unstable nuclei (e.g. Plutonium-240) can sometimes decay by spontaneous fission.Nuclear fission is a process where certain large nuclei (e.g. Uranium-235 & Plutonium-239) absorb a neutron and then split into two smaller nuclei and a few free neutrons. Some large unstable nuclei (e.g. Plutonium-240) don't need to be hit by a neutron to fission.Nuclear fusion is a process where small nuclei under unusual conditions of very high temperature and very high pressure combine to form larger nuclei.All three processes above are exothermic.In stars nuclear fusion stops at nickel and iron (further fusion past this would be endothermic). If all we had was the above processes then that would be where the periodic table ended (therefore there could not be nuclear fission as such heavy nuclei could not exist). However stars die, and some die so spectacularly we call them supernovas.When a supernova occurs, an intense shock wave blows all the outer layers of the star away at very high velocity. At these velocities nuclei collide so hard that normally impossible endothermic nuclear fusion reactions occur. The rest of the periodic table is filled here, including many transuranics not found naturally on earth (e.g. Americium, Californium, Berkelium).
What is produced when helium and hydrogen are fused?
Lithium nuclei and a very large amount of energy.
How is nuclear energy formed?
Some nuclei, notably U235 and Pu239, can be made to cause a chain reaction where neutrons are produced in nuclear fission, and propogate more subsequent neutrons so that a steady rate of fissions can be achieved. Each fission releases an amount of energy in the form of heat, which is then used in generating plant similar to that in a fossil fuelled power plant.
What keeps atoms from fusing together?
It is the nulei which fuse. Nuclei are positively charged and thus repel each other. The kinetic energy of the nuclei must be very large for nuclei to be able to fuse, such as at the surface of the sun, where hydrogen nuclei fuse to form helium nuclei.
What element do you get if you fuse two helium nuclei together?
Nuclear fusion occurs when two nuclei fuse together. This is frequently nuclei of deuterium and tritium (both hydrogen isotopes), which form a helium nucleus plus a neutron.
Is radon 222 unstable or stable?
no because it is so radioative its so unstable.
What should I do if my wife is mentally unstable?
If your wife is mentally unstable then you need to realize that she has no place in a stable marriage. My wife was mentally unstable and popped xanax's and drank everyday. She eventually went to rehab and found a man and left me for him. Was I upset? Yes, very much so. Did I want her back? Yes. But now after realizing how much emotional pain an unstable woman can cause you, it was for the best. Mentally unstable people also tend to be very selfish, and pathological liars to hide their problems. I didn't need it and neither do you.
What are the disadvantages of using a cheap longboard?
The disadvantages of using a cheap longboard are that they tend to be made of stiffer wood and when you ride the longboard there is no give or flexibility which gives a very unstable ride.
How is nuclear energy sustainable?
nuclear energy is produced by taking advantage of natural decay in large nuclei of atoms. atoms with large enough nuclei can only be produced by very large scale nuclear fusion such as stars during a supernova, and making it on earth would take enormous amounts of energy. So no, nuclear energy is not totally sustainable, but a small amount of fuel lasts a long time. For this reason energy can be stored by scientifically making large nuclei atoms and utilizing them later.
