Atomic Nature/Decay Patterns
History/Origin
Sources
Applications
Tradeoffs/Safety
100
This radioisotope has 55 protons, 82 neutrons, and 55 electrons
What is Cs-137?
100
In the 1930s, these two chemists discovered Cs-137
Who is Glenn Seaborg and Margaret Melhase Fuch?
100
These 3 countries are the primary sources of U-238 and U-235
What is Canada, Kazakhstan and Australia?
100
This property of Tc-99m causes it to be generated on-site
What is short half-life?
100
This is the main reason for the replacement of Cs-137 blood irradiators
What is the risk of dirty bomb explosions caused by stolen materials?
200
When Co-60 undergoes beta decay, it eventually settles into a stable isotope of this metal
What is Nickel?
200
The production of Cobalt-60 in nuclear reactors dates to this era
What is 1950s?
200
This country exports the highest amount of Co-60 per year
What is Canada?
200
In industry, Co-60 is used to sterilize these two items
What is medical equipment and spices?
200
To fully remove Cs-137 blood irradiators, these two factors must be taken into consideration
What is the cost of new x-ray devices and
disposal of Cs-137?
300
While Cs-137 has a half-life of 30 years, this isotope has a half-life of over 700 million years.
What is U-235?
300
Cs-137 was first discovered at this university
What is the University of California?
300
Majority of the world’s Molybdenum-99 (used to produce Tc-99m) is produced in reactors in these two countries
What is Canada and the Netherlands?
300
Cs-137 is commonly used for this cancer treatment
What is cervical cancer?
300
In 1986, this nuclear accident occurred and is associated with Cesium-137
What is the Chernobyl nuclear Powerplant accident?
400
Tc-99m is a relatively short-lived isotope that comes from this parent isotope.
What is Molybdenum-99?
400
Cs-137 was first released into the environment during this test in New Mexico in July 1945
What is the Trinity Test?
400
Cs-137 is not naturally occurring, but is produced by the fission of these two elements
What is Plutonium and Uranium?
400
U-235 is most used in this industry
What is nuclear power?
400
This pigment could be used to treat accidental ingestion of Cesium-137
What is Prussian Blue?
500
Cs-137 decays to metastable Ba-137 before releasing another gamma ray at this percent
What is 94.6% ?
500
U-235 was discovered by Arthur Dempster in 1935 using this technique
What is Mass Spectrometry?
500
Cs-137 is released into the environment due to these two main uses of nuclear fission
What is Nuclear Reactors and Nuclear Weapons Testing?
500
This radioisotope is used to inspect materials and track soil erosion and sediment movement
What is Cs-137?
500
Tc-99m has a short half-life, offering this benefit to patients that are injected with it
What is lower long-term radiation exposure?