Q:

Two atoms have the same mass number but different atomic numbers. Which of the following statements concerning these atoms is TRUE

0

Two atoms have the same mass number but different atomic numbers. Which

of the following statements concerning these atoms is TRUE?


  1. Each has the same number of neutrons in its nucleus.
  2. They are isotopes
  3. They are atoms of different elements.
  4. Each has the same number of protons in its nucleus.

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C: different atomic numbers means different numbers of protons and

hence different elements.

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