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Which of the following statements is true about isotopes?

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Question: Which of the following statements is true about isotopes?

Options:

  1. They have the same number of protons
  2. They have different chemical properties
  3. They have different atomic numbers
  4. They have the same mass number

Correct Answer: They have the same number of protons

Solution: 

Isotopes have the same number of protons but different numbers of neutrons.

Which of the following statements is true about isotopes?

Practice Questions

Q1
Which of the following statements is true about isotopes?
  1. They have the same number of protons
  2. They have different chemical properties
  3. They have different atomic numbers
  4. They have the same mass number

Questions & Step-by-Step Solutions

Which of the following statements is true about isotopes?
  • Step 1: Understand that an atom is made up of protons, neutrons, and electrons.
  • Step 2: Know that the number of protons in an atom determines what element it is.
  • Step 3: Realize that isotopes are different forms of the same element.
  • Step 4: Remember that isotopes have the same number of protons (which defines the element) but can have different numbers of neutrons.
  • Step 5: Conclude that because they have different numbers of neutrons, isotopes have different atomic masses.
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