determines the atom’s chemical behavior. A. B. C. D. E. proton‚ neutron‚ electron proton‚ electron‚ neutron neutron‚ electron‚ proton proton‚ photon‚ neutron none of the above 2. The symbol 63 Cu represents an isotope of the element copper. Give the following values: atomic 29 number‚ mass number‚ number of neutrons‚ number of electrons‚ and number of protons. A. B. C. D. E. atomic # 63 63 29 29 29 mass number 29 29 63 63 92 # of neutrons 34 63 29 34 63 # of electrons 63 63 63 29 29 # of protons 63
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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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Atoms and the Periodic Table Chapter 2 Atoms and the Periodic Table / Elements and the Periodic Table * An element is a pure substance that cannot be broken down into simpler substances by a chemical reaction. * Each element is identified by a one- or two-letter symbol. * Elements are arranged in the periodic table. * The position of an element in the periodic table tells us much about its chemical properties. Atoms and the Periodic Table / Elements and the Periodic
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This article was downloaded by: [Purdue University] On: 03 September 2013‚ At: 07:13 Publisher: Taylor & Francis Informa Ltd Registered in England and Wales Registered Number: 1072954 Registered office: Mortimer House‚ 37-41 Mortimer Street‚ London W1T 3JH‚ UK Journal of Nuclear Science and Technology Publication details‚ including instructions for authors and subscription information: http://www.tandfonline.com/loi/tnst20 Characteristics of Several Equilibrium Fuel Cycles of PWR a
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INTRODUCTION Protons and neutrons make up a nucleus‚ which is the foundation of nuclear science. Fission and fusion involves the dispersal and combination of elemental nucleus and isotopes‚ and part of nuclear science is to understand the process behind this phenomenon. Adding up the individual masses of each of these subatomic particles of any given element will always give you a greater mass than the mass of the nucleus as a whole. The missing idea in this observation is the concept called nuclear
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Nuclear Power Stations 8.4.1: The firing of neutron at a heavy nucleus may result in the nucleus splitting‚ releasing free neutrons and lighter nuclei; which can then collide with other nuclei and resulting in the same process. This is a fission chain reaction. 8.4.2: In a fission reaction‚ if you can remove the emitted neutrons from the fissionable material‚ then you can control the rate at which the chain reaction proceeds. A fission reaction whereby the reaction is allowed to proceed without
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an element ’s naturally occurring atoms‚ or isotopes‚ taking into account the of each isotope. 5. The of an element is the total number of protons and neutrons in the of the atom. 6. The mass number is used to calculate the number of in one atom of an element. In order to calculate the number of neutrons you must subtract the from the . 7. Give the symbol and number of protons in one atom of: Lithium Bromine Iron Copper
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Introduction to Nuclear physics ** Introduction Alpha-particle scattering 2.1 Experimental set-up ➢ Alpha particle o is a high-energy helium nucleus with 2 protons and 2 neutrons. o has 2 positive charges. ➢ Gold foil was chosen since it has a high atomic mass. Thin gold foil‚ ~10-6m was bombarded by high-energy alpha particles. ➢ Angular deflections/ scattering of alpha particles were measured by observing the
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plutonium-239. -Control rods: Control rods are the component which makes nuclear fission stable and safe. They are placed in-between the fuel source to absorb any unwanted neutrons. These may be consist of many different elements but the most common used are silver-indium-cadmium alloys as they are great absorbers of neutrons‚ are very strong and are easily manufactured. -Steam generator: This is where water is heated to create steam to power the turbines. The coolant from the reactor takes the
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is because his work had information on protons‚ neutrons‚ and electrons‚ the main components that make up the atom‚ showed what the atom looks like when the three are put together‚ and had also been the discoverer of the nucleus which is the one of them most important parts of the atom’s structure. The discovery of the particles that
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