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Isotopes

Isotopes. What is an isotope? . Every atom in an element has the SAME number of protons and electrons. NOT ALL atoms in an element have the same neutrons. AN ISOTOPE is an element that has a different number of neutrons and mass number. Example . Oxygen has 8 protons. 8 neutrons

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Isotopes

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  1. Isotopes

  2. What is an isotope? • Every atom in an element has the SAME number of protons and electrons. • NOT ALL atoms in an element have the same neutrons. • AN ISOTOPE is an element that has a different number of neutrons and mass number

  3. Example • Oxygen has 8 protons. 8 neutrons • Mass # = 16 • Some oxygen atoms have 8 protons, 9 neutrons • 8 + 9 = 17 (mass #) • Some have 8 protons and 10 neutrons • Called Oxygen-16, oxygen-17, oxygen-18

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