Radioactive Decay occurs naturally all around us. If you test for radiation with a Geiger Counter, you will find that it picks up radiation in the air around you. Mostly, however, radioactive decay occurs in the earth's crust. I cannot name a specific element, as there are many that decay.
Yes. Radium is a natural decay product of uranium, which is naturally formed in stellar nuclear fusion.
Yes, that is where we get the nuclear material for our reactors, by mining it from the Earth. Though it does not occur in high concentrations, we have to concentrate it ourselves.
no it is man made in china and other ciuntries such as japan england and packastan
Nuclear envelope
Synthetic materials like plastics, nuclear waste, and some chemical compounds are examples of things that do not occur naturally on Earth.
Helium-3 is not produced; it is a naturally occurring isotope formed through the decay of tritium. It can also be extracted during the operation of nuclear reactors and obtained through the decay of tritium in nuclear weapons.
Fusion ocurs in the stars including our sun. I don't know of fission occurring naturally anywhere, but there is evidence it once did in a few places on earth a long time ago. At that time there would have been more U-235 which has now reduced by decay. It may occur elsewhere in the universe in planets like earth, but we have no way of knowing this. Natural nuclear fission: Oklo - please see the related link, below
what are the forms of nuclear decay
nuclear decay, such as alpha decay or beta decay.
Isotopes are formed either naturally through radioactive decay of elements or artificially through element irradiation by particles as neutrons, protons, electrons, or alpha particles in accelerators or nuclear reactors through nuclear fission or nuclear fusion reactions in nuclear reactors.supernovasparticle acceleratorsnuclear reactorsnuclear explosionsradioactive decay
Decay may not occur when an object is in a stable and balanced state, with its constituent particles being kept intact. This can happen in certain highly stable isotopes or in a system where decay processes are inhibited by external factors or conditions.
There are 92 naturally occurring elements on Earth. Elements beyond uranium (atomic number 92) are not found naturally, except for trace amounts of some transuranic elements like neptunium and plutonium that are formed in nuclear reactions or decay processes.