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Chemistry question: What is unstable about radioactive atoms? Radioactivity of certain atoms occurs because the energy state of the nucleus is increased above the lowest possible level for the components ... Discuss the question "What is unstable about radioactive atoms?"
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wiki.answers.com/Q/What_is_unstable_about_radioactive_a...
wiki.answers.com/Q/What_is_unstable_about_radioactive_atoms
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Jobs and Education question: Radioactive materials have unstable? Atoms ... Why are radioactive materials unstable? Radioactive material have unstable what?
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wiki.answers.com/Q/Radioactive_materials_have_unstable
wiki.answers.com/Q/Radioactive_materials_have_unstable
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103. Radioactive materials have unstable a) electrons. b) nuclei. c) protons. d) neutrons. ... 104. After the nucleus of a radioactive element undergoes changes, the element can transform into a) a different isotope of the same element. b) an entirely different element. c) both a and b. d) neither a nor b.
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www.vidalia-city.k12.ga.us/schools/VHS/Science/Physical...
www.vidalia-city.k12.ga.us/schools/VHS/Science/PhysicalScience/PhySciDiag1Page5.html
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Thorium is the element of atomic number 90, and this isotope of thorium has an atomic mass of 234. The results of decay may themselves be unstable, ... THE EARLY WORK OF MARIE AND PIERRE CURIE led almost immediately to the use of radioactive materials in medicine. In many circumstances isotopes are more effective and...
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www.aip.org/history/curie/unstable.htm
www.aip.org/history/curie/unstable.htm
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These scientists and many more after them discovered that atoms of uranium, radium and several other radioactive materials are unstable and disintegrate spontaneously and consistently forming atoms of different elements and emitting radiation, a form of energy in the process.
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sci.waikato.ac.nz/evolution/RadiometricDating.shtml
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Natural sources of radiation include the sun (cosmic rays) and radiation from naturally occurring materials found in the earth's crust and in living organisms. Radioactive materials are unstable and decay over time, emitting ionizing radiation.
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engineers.ihs.com/document/abstract/THRVCAAAAAAAAAAA
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There are 81 stable isotopes and over 800 unstable, that is, radioactive, isotopes. Most radioactive materials used in nuclear medicine are isotopes, because a particular medical use will require a given isotope's specific radioactive properties.
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www.radiochemistry.org/nuclearmedicine/diagnostics/01_d...
www.radiochemistry.org/nuclearmedicine/diagnostics/01_diagnostics.shtml
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Health Effects of Radioactive Materials ... The atoms found in most substances are remarkably stable, but in the case of radioactive materials, the atoms are unstable.
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www.ccnr.org/salzburg.html
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