Question

value: 3
an unstable nucleus spontaneously emits particles and energy in a process known as ____.

a. radioactive stability

b. radioactive decay

c. radioactive instability

4 / 5

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Explanation:

To solve this, we analyze each option:

• Option a: "radioactive stability" refers to a stable nucleus, not emitting particles/energy, so incorrect.
• Option b: "radioactive decay" is the process where an unstable nucleus emits particles and energy to become more stable, which matches the description.
• Option c: "radioactive instability" describes the state of the nucleus, not the process of emitting, so incorrect.

Answer:

b. radioactive decay