Chapter 19, Problem 33E

Interpretation Introduction

Interpretation: Fraction of administered dose of $\text{100}\text{μg}{}_{\text{43}}^{\text{99}}\text{Tc}$ remaining in someone’s body after $2.0$ days is to be calculated.

Concept introduction: A process through which an unstable nuclide looses its energy due to excess of protons or neutrons is known as radioactive decay. The cause of instability of a nuclide is its inefficiency in holding the nucleus together. The curie is commonly used to measure nuclear radioactivity.

${}_{\text{43}}^{\text{99}}\text{Tc}$ is absorbed by the bones and is used as a radiographic agent in bone scans.

To determine: The fraction of administered dose of $\text{100}\text{μg}{}_{\text{43}}^{\text{99}}\text{Tc}$ remaining in someone’s body after $2.0$ days