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Which of the following statements about isotopes is true?

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

Options:

  1. Isotopes have the same number of protons
  2. Isotopes have different chemical properties
  3. Isotopes have different numbers of protons
  4. Isotopes are always radioactive

Correct Answer: Isotopes have the same number of protons

Solution: 

Isotopes are atoms of the same element with the same number of protons but different numbers of neutrons.

Which of the following statements about isotopes is true?

Practice Questions

Q1
Which of the following statements about isotopes is true?
  1. Isotopes have the same number of protons
  2. Isotopes have different chemical properties
  3. Isotopes have different numbers of protons
  4. Isotopes are always radioactive

Questions & Step-by-Step Solutions

Which of the following statements about isotopes is true?
Correct Answer: Isotopes are atoms of the same element with the same number of protons but different numbers of neutrons.
  • 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 but different numbers of neutrons.
  • Step 5: Conclude that this difference in neutrons gives isotopes different atomic masses.
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