Physics for IGCSE & O level - Atoms And Radioactivity (Section 1 - No. 3)
Which of the following statements correctly describes what happens to the atomic mass and atomic number during gamma decay?
Atomic mass and atomic number both decrease.
Atomic mass remains the same, and the atomic number remains the same.
Atomic mass remains the same, and the atomic number increases.
Atomic mass increases, and the atomic number remains the same.
Explanation
During gamma decay, neither the atomic mass nor the atomic number changes.
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