Answer : The radioisotope is Technetium - 99.
Explanation :
Technetium is a chemical element whose symbol is Tc.
The atomic number of Tc = 43
It is belongs to the group 7 and period 5.
The element category of Tc is transition metal.
It is the lightest element whose isotopes are all radioactive.
There are many radioisotopes of Tc but Technetium-99 is used in a medical applications.
- It distinguishing the brain tumor.
- It is also used in the bone and brain scans.