[Beta/Alpha radiation therapy (I131‚ Y-90)]‚ [Applications (Cancer/Oncology‚ Cardiac)] & Stable Isotopes (Deuterium‚ C-13) - Global Trends & Forecast to 2017 On 13rd June 2014 The report focuses on "Nuclear Medicine Market and Radiopharmaceuticals [SPECT/PET Radioisotopes (Technetium‚ F-18)]‚ [Beta/Alpha radiation therapy (I131‚ Y-90)]‚ [Applications (Cancer/Oncology‚ Cardiac)] & Stable Isotopes (Deuterium‚ C-13) - Global Trends & Forecast to 2017" The market of radiopharmaceuticals is dominated
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BENIFICIAL AND ALTERNATIVELY NOT SO BENIFICAL USES OF RADIATION BY: Sanwal Hayat What is radiation? Radiation is away in which energy moves from one place to another for example energy radiates away when a stone dropped in the water in circular waves while sound energy radiates from speakers mouth to listeners ear and heat energy radiates from sun to earth.
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Lab Report Atomic Dating Using Isotopes Answer the following questions about the results of this activity. Record your answers in the boxes. Send your completed lab report to your instructor. Don’t forget to save your lab report to your computer! Reference: Isotope Half-Life Chart Isotope Product Half Life Carbon-14 Nitrogen-14 5730 years Potassium - 40 Argon - 40 1‚280 million years Rubidium - 87 Strontium -8 7 48‚800 million years Thorium - 232 Lead – 208 14‚010 million
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Isotopes Any of two or more forms of a chemical element‚ having the same number of protons in the nucleus‚ but having different numbers of neutrons are called isotopes. Some isotopes are unstable‚ especially those with a lot of neutrons compared to the number of protons in the nucleus. These isotopes tend to eject some particles‚ in the form of radiation‚ until a stable nucleus is produced; this is called the radioactive decay. Four isotopes as well as their uses are mentioned subsequently.
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The Arrangement of Electrons in the Atom An energy level is defined as the fixed energy value that an electron in an atom may have. Bohr’s Theory 1. Electrons revolve around the nucleus in orbitals 2. The electrons in an orbit have a fixed energy Note: Orbitals are also known as energy levels 3. As long as an electron is not in any one particular energy level‚ it neither gains or loses energy 4. When an atom absorbs energy it jumps to a higher energy level Note: They do not remain
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Isotopes and average atomic mass Isotope: element variations with different atomic mass but same atomic number Isotopic Abundance: the relative amount in which each isotope of an element Calculating: given 2 isotopes of an element [B: 10.01u] [B: 11.01u] 1) Given average atomic mass: 10.81u If given percentages‚ you can find average atomic mass by adding each portion 2) Set variables for unknown values Let x represent % abundance for 10/5 B Let 1-x represent % abundance for 11/5 B Calculate:
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Test #3 Chapter 2: 1) What is matter? 2) What is mass? 3) Matter that has a uniform and definite composition is called a ______. Give an example. 4) A quality/condition of a substance that can be observed/measured without changing the substance is a ________ __________. Give examples. 5) What are the three states of matter? Put the correct state of matter in each box. 6) What is the difference between gas and vapor? 7) What is a physical change? Give an example. 8) A physical blend
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(_92^238)U Protons = 92‚ electrons = 92‚ neutrons = 238 – 92= 146 Isotopes Isotopes are atoms of the same element which have the same number of protons but different numbers of neutrons. That is‚ their proton numbers are the same but their nucleon numbers are different. Examples Hydrogen: (_1^1)H: (_1^2)H: (_1^3)H Carbon: (_6^12)C: (_6^14)C Chlorine: (_17^35)Cl: (_17^37)Cl Uranium : (_92^235)U: (_92^238)U Isotopes have the same chemical properties because they have same number of protons
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REVIEW VOCABULARY REVIEW radioactive isotope is an isotope whose nucleus tends to release particles‚ radiant energy‚ or both; radioactive dating is a technique for determining the age of a material by measuring the amount of a particular radioactive isotope the material contains. radioactive decay is the release of particles‚ radiant energy‚ or both by a radioactive isotope half-life is the time it takes for one-half of any size sample of a particular isotope to decay. microsphere is a spherical
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Isotopes in Agriculture An isotope is a two or more atom that has different mass number but the same atomic number. An isotope is a variation of an element with a difference in the normal number of neutrons. The increased mass of an isotope can cause the chemical reactions they are used in to progress more slowly than a reaction that does not use isotopes. Not all isotopes are radioactive and there are many uses for them. They can be used in medicine‚ diagnose‚ nutrition‚ agriculture‚ research
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