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Published byDavid Preston Modified over 8 years ago
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Calculating Particles for an ion
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Representations from the Periodic Table 26 +2 Fe Iron 55.845 2-8-14-2 Oxidation States Name Atomic Mass Atomic Number Symbol Electron Configuration Electrons/Level +3
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Calculating Number of Protons Atomic Number Atomic Number for an atom that is an ion = # of Protons 26 +2 Fe Iron 55.845 2-8-14-2 +3
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Calculating Number of Electrons Atomic Number Atomic Number for an atom that is an ion = # of Protons 26 +2 Fe Iron 55.845 2-8-14-2 +3 # of electrons = Protons – charge Ex. 26-(+2) = 24
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26 +2 Fe Iron 55.845 2-8-14-2 Calculating Number of Neutrons If Most Common Isotope - Round Atomic Mass to nearest whole number so 56 AMU Neutrons = Mass Number – Atomic Number +3
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Calculating Mass Number Mass Number = Sum of the protons and neutrons 26 +2 Fe Iron 55.845 2-8-14-2 +3
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Isotope Name Element Name followed by hyphen and then Mass Number ex. Iron - 56 26 +2 Fe Iron 55.845 2-8-14-2 +3
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Isotope Notation X m p m = mass number: # of Protons + Neutrons p = Atomic Number: # of protons X = symbol of element 26 +2 Fe Iron 55.845 2-8-14-2 +3 Ex = Fe 56 26 c c = charge of element +2
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Calculating Charge Charge = Protons – Electrons Ex. 26 – 24 = +2 26 +2 Fe Iron 55.845 2-8-14-2 +3
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Element / Symbol Isotope Name Isotope Notation Atomic Number Protons (p + ) Neutrons (n 0 ) Electrons (e - ) Mass Number Iron Fe Iron-56 56 Fe +2 26 302456 Final Answers for Iron
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