Practice question

MCQ

Question

Which of the following has the same number of neutrons as ⁴⁰₁₈Ar?

Choose one · Correct answer highlighted

³⁹₁₉K ⁴²₂₀Ca ⁴¹₁₉K Correct ⁴⁰₂₀Ca

Neutrons in Ar = 22. ⁴¹₁₉K also has 22 neutrons.

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