What is an isotope?

A Atoms of different elements with the same mass

B Atoms of the same element with different numbers of neutrons

C Atoms with no electrons

D A charged atom

✓ Correct Answer: Option B

Isotopes are atoms of the same element (same protons) but with different numbers of neutrons, giving different mass numbers.

💡 Why is B) the correct answer?

The correct answer to the question "What is an isotope?" is Option B: Atoms of the same element with different numbers of neutrons.

The other options — A) Atoms of different elements with the same mass, C) Atoms with no electrons, D) A charged atom — are incorrect for this IB Exam Prep question. As explained above: Isotopes are atoms of the same element (same protons) but with different numbers of neutrons, giving different mass numbers.

📚 About This IB Exam Prep Practice Question

This 2-level IB Exam Prep question from the Chemistry topic is part of BrainForge Quiz's free exam preparation library. Each question includes the correct answer and a detailed explanation to help you understand the underlying concept, not just memorize the answer.

How to use this page: Read the question above, consider all four options (A through D), then check the highlighted correct answer and explanation. For active timed practice, start a free IB Exam Prep practice test or use flashcards for spaced repetition review.

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What is an isotope?

✓ Correct Answer: Option B

📚 About This IB Exam Prep Practice Question

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