HESI A2 Exam Prep 2026

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Practice with exam-accurate HESI A2 questions that match the real test in format, difficulty, and logic. Trusted by students accepted into nursing programs across the United States.

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About Nuclear Chemistry & Radioactivity

Iodine-131 undergoes beta decay, emitting beta particles. It’s used in thyroid diagnostics and treatment due to its targeted radiation effects.

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Nuclear Chemistry & Radioactivity HESI A2 Practice Questions

Free Nuclear Chemistry & Radioactivity practice questions for the HESI A2 exam with detailed rationales.

Question 2 of 2

A clinician uses iodine-131 to evaluate thyroid activity. Which type of nuclear process is this and what radiation is primarily emitted?

A. Nuclear fusion; alpha particles
B. Beta decay; beta particles
C. Fission; gamma rays
D. Positron emission; neutrons

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