Give 4 examples of radioactive isotopes and their uses?
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Carbon-14: Archaeological dating\nAmericium-241: Smoke detectors\nCobalt-60: Food Irradiation\nPhosphorus-32: Biology study
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Answers:\n\n(a) Thorium-234>Proactinium-234 = -1e (beta decay)\n\n(b) Hydrogen + Hydrogen > Helium (fusion)\n\n(c) Uranium-238 > Thorium-234 + Helium-4 (alpha decay)
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Write the word 'radioactivity' in www.google.com.Then collect watever information u need.
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radioactivity is the number of radioactive particle emitted in a unit of time.\nSo, the application are\nMedication- radioactive source that emits X-ray is used to scan bones. It also used to kill cancer cells(this technique is called the radiotheraphy)\nDating- Since there is C14 which is radioactive in almost every carbon based organism (include human and dinosour,n in fact in all organism), historian were able to determine the age of an artifact or bones.\nPaper production- using information that alpha particle cannot penetrate a thin sheet of paper, we are able to control the thickness of paper produced.\nsterilization- because radiation can kill cells, it is use to kill microbes to sterill things.
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a mixture of barium-133 and cesium-137\n\nhttp://www.orau.org/ptp/collection/nuclearmedicine/mockiodinekit.htm
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B: Some mass is converted into energy in order to split the unstable nucleus into two, smaller, stable ones.\n\nC: Their nuclei are too big to remain in one lump of mass. Particles (alpha, beta, gamma, etc) start shooting off in all directions, to bring the nucleus down to a smaler size. It's all about the smaller size.\nAlso, no atom can have more than one nuclues, because then it would be two atoms. More or less elctrons make an atom into a charged ion, not an isotope. Neutrons are what make isotopes.
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Isotopes are atoms with the 'wrong' number of nutrons, or no-charge particles, in the nucleus. The non-isotope form of the element contains the same number of nutrons as it has protons. \nIE: carbon\nCarbon usually contains 6 protons and 6 nutrons, each weighing one atomic mass unit (AMU), for a total of 12 AMU. It's refered to, therefore, as Carbon 12.\nThe radioactive carbon isotope you hear about that's used for finding the age of old things people dig up is Carbon 14. To be carbon, it has to have 6, and only 6, protons. To weigh 14 AMU, it needs an extra 2 nutrons. 6+6+2=14\n\nIsotopes are written as isotope mass number over nonisotope mass number (as a fraction, not reduced) infront of the atomic symbol.\n\n14\n----- C = carbon 14 \n12
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try:  Yahoo search / video / isotopes
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Tracer elements are radioactive isotopes that can be used in a reaction and followed by geiger counter or other means to trace the reaction . \nThey are used to check for cracks in aircraft;\nThey are used to see where pipes are leaking.\nThey are used in the body to check on cancer.(iodine goes to the hot spots in the thyroid)\nThey can be used to check pathways in the body.\n\nA question? where does the O2 come from in the photosynthesis reaction, the H2O or the CO2?\n\nIf you tag one of the oxygens and then see where the tag is after the reaction, you can answer the question. Tag means to use a radioactive isotope.
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Protons, Neutrons, and electrons
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Uranium is a chemical element in the periodic table that has the symbol U and atomic number 92. Heavy, silvery-white, toxic, metallic, naturally radioactive, pyrophoric, and teratogenic, uranium belongs to the actinide series and its isotope 235U is used as the fuel for nuclear reactors and the explosive material for nuclear weapons. Depleted uranium is used in incendiary projectile weapons. Uranium is commonly found in very small amounts in rocks, soil, water, plants, and animals (including humans).
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try this website, I just did a search and this came up:\n\nhttp://nuclearweaponarchive.org/Nwfaq/Nfaq5.html
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Measuring radioactivity levels of radioactive isotopes  with a Geiger counter.  Measuring radioactivity through different materials.
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fission reaction or fusion? chain reaction? what molecules? neutrons may be? Uranuim isotope? nuclear fuel?\ni can't help you.
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I'll describe them by each element:\nLi:used primarily in heat-transfer applications, batteries (mainly cell phone and camera batteries), household appliances such as toasters and microwaves, and in high performance alloys such as those used for aircraft construction.\n\nNa:used to refine some reactive metals, such as zirconium and potassium, from their compounds. This alkali metal as the Na+ ion is vital to animal life. Other uses: In certain alloys to improve their structure. In soap, in combination with fatty acids. Sodium soaps are harder (higher melting) soaps than potassium soaps. \nTo descale metal (make its surface smooth). \nTo purify molten metals. In sodium vapor lamps, an efficient means of producing light from electricity \n\nK: It is primarily used in fertilizer as either the chloride, sulfate or carbonate - not as the oxide. \nPotassium hydroxide is an important industrial chemical used as a strong base. \nPotassium nitrate is used in gunpowder (black powder). An older term for KNO3 is saltpeter. \nPotassium carbonate, known as potash, is used in glass manufacturing. \nGlass treated with liquid potassium is much stronger than regular glass. \nNaK, pronounced "nack", an alloy of sodium and potassium which is liquid at room temperature, is used as a heat-transfer medium. It can also be used as a desiccant for producing dry and air-free solvents. \nPotassium is an essential component needed in plant growth and is found in most soil types. \nIn animal cells potassium ions are vital to keeping cells alive \nPotassium chloride is used as a substitute for table salt and is also used to stop the heart, e.g. in cardiac surgery and in executions by lethal injection in solution. \nThe superoxide KO2 is used as a portable source of oxygen and as a carbon dioxide absorber. It is useful in portable respiration systems. \n\nRb: A working fluid in vapor turbines. \nA getter in vacuum tubes. \nA photocell component. \nThe resonant element in atomic clocks. This is due to the hyperfine structure of Rubidium's energy levels. \nAn ingredient in special types of glass. \nThe production of superoxide by burning in oxygen. \nThe study of potassium ion channels in biology. \n\nCs: This element is most notably used in atomic clocks.\nFr: special fluorescent imaging camera
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radioactivity is the spontaneous emission of alpha beta or gamma rays from a radioactive substance to attain stability.\nthey can be used as tracers to know the path of ne reaction\nsome of them can be used to treat cancer like co-60. and uranium is already used in nuclear reactors for generating electricity.
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No; very few isotopes have been given individual names (there are far too many of them). The only ones I can think of are deuterium (hydrogen-2) and tritium (hydrogen-3).