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Iodine-131 is a radioactive isotope that is used as a medical tracer to study and treat the thyroid gland. This radioactive element emits both beta particles and gamma waves. To effectively stop both beta particles and gamma waves, scientists use a chamber composed of

Aconcrete.
Blead.
Cmetal.
Dplastic.

Verified Answer :

scme1702
BLead
Lead chambers are used to effectively contain all type of radiations, given that the thickness is sufficient.

Answer:

B) Lead

Explanation:

The radioactive decay for iodine is:

₅₃I¹³¹  →  ₋₁e⁰  +  ₀γ⁰  +   ₅₄Xe¹³¹

where 'e' and 'γ' represent the beta and gamma particles.

Gamma rays are more energetic and penetrating than beta rays. Lead is a metal that has a high density and atomic number which helps in blocking both gamma and beta rays.

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