Isotopes and atoms

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1. What is an isotope?

  • atoms of the same element with different numbers of neutrons
  • atoms of different elements with the same number of neutrons
  • atoms of the same element with different atomic numbers
  • atoms of different elements with the same atomic number
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2. What is the difference between boron-11 and boron-12?

  • This is going to end as some really bad pun,isn't it?
  • boron-12 has a higher mass number
  • boron-12 has a higher atomic number
  • boron-12 has one less neutron

3. How many electrons would Nitrogen-15 have?

  • 7
  • It depends
  • 8
  • 15

4. Which of the below DOES NOT make up an atom?

  • plasma
  • proton
  • neutron
  • electron

5. When an element is shown with a mass number and atomic number, which number is placed on top?

  • neither
  • a sum of both
  • mass
  • atomic
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