In the Four Radioactive Series,the Nuclei Decay by Either Emitting

question 18

Multiple Choice

In the four radioactive series,the nuclei decay by either emitting alpha particles or beta particles until they reach the stable end product.Each decay,therefore,results in a mass number change of either 4 (for alpha decay) or 0 (for beta decay) .The radium isotope ²²⁶Ra is in one of these series.What is the starting isotope in the series containing ²²⁶Ra?

• A)²³⁸U
• B)²³⁵U
• C)²³²Th
• D)²³⁷Np

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Definitions:

Thoracic Wall

The bony and muscular structures forming the chest cavity that protect thoracic organs and assist in breathing.

Subclavian Vein

A major vein located under the clavicle that drains blood from the upper extremities back to the heart.

Internal Jugular

A major vein in the neck, carrying blood from the head, brain, face, and neck back to the heart.

Posterior Intercostal

Pertaining to the muscles and arteries located between the ribs at the back side of the body, assisting in the mechanical aspect of breathing.