Which Element Has Only Radioactive Isotopes

question 38

Multiple Choice

Which element has only radioactive isotopes?

• A) Al
• B) La
• C) Li
• D) Lr
• E) Ir

---

Definitions:

Elevated Temperatures

Higher than normal temperatures that could refer to weather conditions, body temperature, or any system's operating temperature.

Shut Down

The process of closing or turning off, usually referring to machinery, computers, or operations.

Familiar Words

Words that are easily recognized and understood by most people, often used to clarify or simplify communication.

Complex Words

Words that contain two or more morphemes, making them longer and sometimes more difficult to understand.