Question 1
This question is about the use of radioactive isotopes.
Patients suffering from prostate cancer can experience metastatic bones. As part of the cancer treatment, patients are injected with an isotope of strontium which is readily taken up by the bones.
The table shows the half-life and emission information for strontium-89 (Sr-89) and strontium-90 (Sr-90).
Beta particles have a quality factor of 1 .
State, in terms of range, two reasons why Sr -89 is the more suitable choice of isotope to be used in the treatment of bone cancers.