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Technetium

听颁辞苍迟谤颈产耻迟辞谤蝉: Lily Allen, Katie Witte and Jeanette听 听Marshall. "We chose Tc because we attend Tiffin听 听Columbian High School (TC for short). Researching听 听the element Technetium is a unique way to represent听 听our school and a fun learning opportunity."
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How is it used?

Technetium was approved for medical use in the United States in June 1990 as a radiopharmaceutical.

鈥淩adiopharmaceuticals are radioactive agents, which may be used to find and treat certain diseases or to study the function of the body's organs鈥� (鈥淭echnetium tc 99m medronate (intravenous route)鈥�).

Where can it be found?

Technetium is rare because its isotopes are short-lived. It is a man-made element produced during nuclear reactor operations and is a byproduct of nuclear weapons explosions. Because of this, traces of Technetium can be found in the Earth's crust.

About the Display:

• A picture of the element: shows the physical appearance of the Technetium.
• Pictures of a kit for the preparation of a Technetium 99m oxidronate injection and representation for Mag3 box: Using this kit, a qualified professional can easily prepare a Technetium 99m oxidronate injection. There are many different variations of this injection, each to image a different organ. Inside the kit, there are sterile, non-reactive vials. After its preparation, the injection will last for about 12 hours.
• Vial and syringe containing green liquid and lead protective cover: The green colored liquid is representative of Technetium-99m (Tc-99m)听 Sulfur Coilloid. This radiopharmaceutical is used in nuclear medicine to visualize organs such as the esophagus, stomach, and lungs, helping doctors diagnose conditions like gastroesophageal reflux and pulmonary aspiration. However, the green liquid in this display is not actual Technetium (Tc-99m) Sulfur Colloid, it is simply green-colored water in a glass vial. While the liquid is only a visual representation, the lead protective container shown is real and is the same type used in the medical field to safely transport radiopharmaceuticals. These display items were generously provided by Joseph Agosti,听Radiation Safety Officer at the University of Toledo.
• A scan of Tc in the human body: A visual depiction of what a scan will look like with Technetium 99m added as a tracer.
• Schematic showing
• Radioactive warning sign听 to represent the radioactive nature of Tc.听
• Pictures of the cofounders of Tc: and

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• A stopwatch set at 6 hours: When used for medical purposes Tc only remains in the human body for about 6 hours.
• 尾 symbol: This is the symbol for a beta particle. Technetium releases radiation in the form of beta particles.

Fun Facts:听

• Technetium is rare because its isotopes are short-lived.
• The longest living isotope of Technetium has a half life of relatively 4 million years.
• Technetium has a melting point of 2157 掳C and a boiling point of 4262 掳C.
• Technetium is a grey, odorless, radioactive element. It has 43 protons and 2 valence electrons. Abbreviated Tc, technetium is solid at room temperature.

About the Contributors:

Listed in order:听

• Katie Witte - Freshman at Tiffin Columbian High School, Honors Physical Science student, Tiffan, OH
• Jeanette Marshall - Chemistry and Physical Science teacher at Tiffin Columbian High School, Tiffin, OH
• Lily Allen - Freshman at Tiffin Columbian High School, Honors Physical Science student, Tiffin OH

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They decided that researching the element Technetium for the periodic table would be a unique way to represent their school: Tiffin Columbian High School (TC for short), and a fun learning opportunity.

Works Cited:

• 鈥淜it for the Preparation of Technetium Tc 99m Medronate Injection.鈥� accessdata.fda.gov,

https://www.accessdata.fda.gov/drugsatfda_docs/label/2010/018035s029lbl.pdf. Accessed 23 January 2025.

• 鈥淥ffice of Radiation Protection - Technetium-99 (Tc-99) Fact Sheet.鈥� Washington State Department of Health,

https://doh.wa.gov/sites/default/files/legacy/Documents/Pubs//320-083_tc99_fs.pdf. Accessed 16 January 2025.

• Perrier, Carlo. 鈥淭echnetium - Element information, properties and uses | Periodic Table.鈥� The Royal Society of Chemistry,

https://www.rsc.org/periodic-table/element/43/technetium. Accessed 23 January 2025.

• 鈥淭echnetium-99m - StatPearls.鈥� NCBI,

https://www.ncbi.nlm.nih.gov/books/NBK559013/. Accessed 23 January 2025.

• 鈥淭echnetium tc 99m medronate (intravenous route).鈥� Mayo Clinic , 31 January 2024,

https://www.mayoclinic.org/drugs-supplements/technetium-tc-99m-medronate-intraveno us-route/description/drg-20075278. Accessed 16 January 2025.

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