Each of the following nuclides is used in nuclear medicine. List them in order o

Question

Each of the following nuclides is used in nuclear medicine.

List them in order of most active (largest number of decay events per second) to least active (smallest number of decay events per second).

Rank the elements from the most active to the least one. To rank items as equivalent, overlap them.

I-131   In-111   Y-90     Tc-99cm

The most active                                                                 The least active

Explanation / Answer

most active to least active order is as follows

Tc-99m, 6.02 hours > Y-90, 64.1 hours > In-111, 2.8 days > I-131 8.0 days

Ranking of the elements from the most active to the least one.

Tc-99m > Y-90 > In-111 > I-131

Related Questions

Navigate

• Browse (All)
• Browse E
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.