Radiopharmaceuticals

How many neutrons would Fe-56 have?

• 56
• 26
• 30
• 33

How many electrons does a Copper atom have?

• 63
• 29
• 92
• 34

An element is defined by its number of 

• protons
• electrons
• neutrons
• protons + electrons

How many neutrons does the isotope below have?     ⁸⁹ ₃₆Kr

• 53
• 36
• 89
• 125

Look at the following diagram:

Name the method of production

• Reactor-produced radionuclides

• Nutrion-produced radionuclides

• positron-produced radionuclides

• Cyclotron-produced radionuclides

Look at the following diagram:

Name the method of production

• Reactor-produced radionuclides

• Cyclotron-produced radionuclides

• x-ray-produced radionuclides

• organic-produced radionuclides

Radioactive materials decay naturally and release alpha, beta or gamma radiation. What is the name given to the number of nuclei that decay each second?

• The frequency

• The half-life

• The activity

What is a becquerel?

• One decay per second

• One decay per minute

• One decay per hour

What is the half-life of a radioactive isotope?

• The time taken for the daughter nuclei to increase

• The time taken for the nucleus to decay

• The time taken for half the parent nuclei to decay

• The time taken for half the parent nuclei to increase

A radioactive source’s activity falls from 8,000 counts per minute to 500 counts per minute in 20 hours. What is the half-life of the source?

• 5 hours

• 10 hours

• 30 minutes

• 2.5 hours