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radioactivity start from the nucleus of an atom which becomes unstable n emit radiation
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How did the discovery of radioactivity contradict Dalton's atomic theory?
radioactivity proves that there are smaller particles in an atom that makes it up, they are proton, neutron, and electron. Dalton's atomic theory clearly states that the atom is the simplest particle. Radioactivity contradicts Dalton's theory since it proves that there are particles which are simpler than the atom.
What is the order of magnitude of the radius of an atom?
The order of magnitude of the radius of an atom is Angstrom Units (10-10 m)
What radioactive atoms spontaneously do?
Depending on the type of atom, a radioactive atom will decay by emitting an alpha particle (helium nucleus), proton, neutron, electron, or will split apart completely.
What scientists were involved in the discovery of radioactivity?
Henri Becquerel first discovered radioactivity (by mistake).
What is a sentence for radioactivity?
Chernobyl is well-known for it's dangerously high radioactivity levels.
What is it called when an atom decays and become another element?
Radioactivity
How is radioactivity formed?
Radioactivity occurs when some of the binding energy in an atom becomes converted into kinetic energy, resulting in the expulsion of some of the particles of the atom. And generally some energy as well.
Who named the process by which materials give off energy of an uranium atom radioactivity?
Henri Becquerel discovered in 1896 the natural radioactivity of uranium.The word radioactivity was coined by Marie Curie after.
Spontaneous emission of radiation from an atom?
This physical phenomenon is called radioactivity.
Discuss what cathode rays and radioactivity reveal about the atom?
i don't have a time to answer......
What is the stability of an atom determined?
Radioactivity is identified with radiation detection instruments.
Who showed that radioactivity is caused by the breakdown of one atom into another?
Ernest Rutherford
How is radio activity related to the atom?
radioactivity is produced by state changes in the protons & neutrons within the nucleus of the atom and their binding forces.
What discovery rejects the idea that atom is indestructible?
Its RADIOACTIVITY!! That was the first discovery that rejects the idea that the atom is indestructible
When a uranium atom 92u235 decays radioactivity to became protactinium 91u231 the radiation emitted are?
entropy
What the meaning of radiocative?
Radioactivity results from unstable elements. This means the amount of protons in the nucleus of the atom is not equal to the amount of electrons in the outer shells of the atom.
Process which unstable nuclei emit radiation is called?
This process through which unstable nuclei emit radiation is called radioactive decay. It also is called nuclear decay, and it is a natural process in which an atom of an isotope decomposes into a new element.
