The Radioactive Isotope ¹³¹I (Atomic Number 53) Decays to the Isotope

question 101

Multiple Choice

The radioactive isotope ¹³¹I (atomic number 53) decays to the isotope ¹³¹Xe (atomic number 54) . What type of radioactive decay is this?

• A) electron capture
• B) electron ionization
• C) beta decay
• D) alpha decay

---

Definitions:

Delayed Sleep Phase Type

A condition where an individual's sleep is delayed by two or more hours beyond the conventional bedtime, leading to difficulty in waking up at a desired time.

Nightmare Disorder

Sleep disorder characterized by nightmares frequent enough to cause significant distress or impairment in functioning.

Prazosin

A medication primarily used to treat high blood pressure and symptoms of post-traumatic stress disorder, by relaxing blood vessels and allowing blood to flow more easily.

Medication

Substances used to diagnose, treat, or prevent disease and relieve symptoms, prescribed by medical professionals.