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An arrangement of elements in which the elements are separated based on properties
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The atomic number of every element represents the number of protons in the nucleus of an atom of that element.
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The total number of protons and neutrons in an atom. Number of neutrons = mass number – atomic number
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http://www.google.com/imgres?imgurl=http://www.hibbing.edu/chem/V.08/isotope_symbols_1.jpg&imgrefurl=http://www.rapidgraphs.com/qwr.php%3Fq%3Disotope- notation&usg=__12aXBa5PuDqU9mdbBqV92mGRrt0=&h=344&w=514&sz=40&hl=en&start=18&zoom=1&tbnid=fj4qDT6dfXQW2M:&tbnh=105&tbnw=157&ei=9lZcTYD5O5GSgQfB44SmDQ&prev=/images%3Fq%3 Dshorthand%2Bnotation%2Bfor%2Bchemical%2Bsymbols%26um%3D1%26hl%3Den%26rlz%3D1T4ADRA_enUS418US418%26biw%3D1259%26bih%3D560%26tbs%3Disch:1&um=1&itbs=1&iact=rc&dur=445&oei= 71ZcTZmxJoHegQenwcD-DQ&page=2&ndsp=21&ved=1t:429,r:12,s:18&tx=99&ty=18 Chemical Symbol Shorthand Notation
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Electrons in an atom are equal to the number of protons.
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The nucleus is made of p + n 2 protons are close together there is a strong attraction Nuclear Force
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Atoms (of the same element) that have the same number of protons but a different number of neutrons. Do Isotopes have different mass numbers?
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Hydrogen Hydrogen-1 (Hydrogen) Hydrogen-2 (Deuterium) Used as a moderator in nuclear reactors Hydrogen-3 (Tritium) Used in the production of Hydrogen bombs
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There are 3 isotopes of Oxygen. Oxygen-16, Oxygen-17 and Oxygen 18. Write each in shorthand notation. There are 3 isotopes of Chromium. Chromium- 50, Chromium-52 and Chromium-53. How many neutrons are in each isotope?
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One twelfth of the mass of a carbon-12 atom
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Calculate a weighted average Not each isotope is as common as the next You need to know the mass of each isotope and its natural abundance.
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