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2. what is the atomic number?

  • number of metals
  • is the number of protons in an atoms (little number)
  • big number
  • mass number

3. what is the mass number?

  • a weight of something
  • total number of protons and neutrons in an atom (top number)
  • bottom number

4. what is an element?

  • substance made up of one type of atom
  • a metal
  • part of the periodic table
  • in the nucleus

5. What is an isotope?

  • Atoms of the same element that have the same atomic number but different mass number
  • have different atomic numbers
  • part of ionic bonding
  • whats in a nucleus
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