Isotopes

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Author:
Anonymous
ID:
41118
Filename:
Isotopes
Updated:
2010-10-10 15:34:02
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Isotopes
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  1. Isotope:
    Atoms of the same element with different numbers of neutrons
  2. Mass #:
    Mass of an individual isotope
  3. Why is the mass of different isotopes different?
    Number of neutrons is different
  4. Atomic mass of an element:
    Average mass of mixture of its isotopes
  5. One way to show an isotope:
    • Name of element followed by mass #
    • -e.g. Hydrogen-1
  6. Another way to show an isotope:
    • Chemical symbol with mass # on top, atomic # on bottom
    • 10 11
    • B B
    • 5 5
  7. Which isotope is most common?
    Whichever whole number the mass # is closest to

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