20 Elements on the Periodic Table You've Probably Never Heard of.

20 Elements on the Periodic Table You've Probably Never Heard Of

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Like most of these elements Tennessine is a very radioactive metal so much about it is still unknown which is why you probably have never heard of them. Its was also just recently discovered in 2010 by Scientists from the Joint Institute for Nuclear Research in Dubna, Russia, the Lawrence Livermore National Laboratory in California, USA, and Oak Ridge National Laboratory in Tennessee, USA. It is currently only used in experiments. 

No this is not the Krypton you see in Superman movies. It was discovered in 1898 by Sir William Ramsay and Morris Travers. Krypton is a gas with no colour or smell. It does not react with anything except fluorine gas. Radioactive krypton was used during the Cold War to estimate Soviet nuclear production. The gas is a product of all nuclear reactors, so the Russian share was found by subtracting the amount that came from Western reactors from the total in the air.It has no biological role.

Elements and atoms are the building blocks for all matter. They can also never be separated or broken down because they are already the smallest they can be already. When elements combine is how we get all the resources that we have today. Like when water is formed two hydrogen atoms  and an oxygen atom are combined.

Hassium was discovered in 1984 and discovered by Peter Armbruster and Gottfried M&#252;nzenberg. Its melting and boiling point are both unknown. It is a highly radioactive metal that is only being used in experiments. That said it has no biological use and is manmade.

William Crookes discovered Thallium 1861. It has a melting point of 304&#176;C and boiling point of 1473&#176;C. It is a metal that is soft and tarnishes easily. It is a toxic element and is used in rodent killers. Most thallium is used by the electronics industry in photoelectric cells.&#160;

Tantalum was discovered in 1802 by Anders Gustav Ekeberg. It is used in medical prosthetics. Tantalum is also a shiny, silver metal that is very resistant to corrosion.It is also used in a lot of electric components and has no biological role and is non toxic.

Praseodymium was discovered in 1885 by Carl Auer von Welsbach. It's a soft, silvery metal. Praseodymium is used in a lot of alloys and also aircraft engines. It's salts are used to colour glasses. It has no biological role and has low toxicity.

Osmium was discovered in 1803 by Smithson Tennant.&#160;Like Tantalum is resists corrosion and is the densest element. It has very little uses but is used in electrical contacts and the chemical industry as a catalyst. Osmium has no known biological role and the metal is not toxic, but its oxide is volatile and very toxic, causing lung, skin and eye damage.

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Ruthenium was discovered in 1844 by Karl Karlovich Klaus. Its is a shiny, silvery metal. Most is used in the electronics industry for chip resistors and electrical contacts. Ruthenium oxide is used in the chemical industry to coat the anodes of electrochemical cells for chlorine production. Ruthenium is also used in catalysts for ammonia and acetic acid production. Ruthenium compounds can be used in solar cells, which turn light energy into electrical energy. It has no biological role.

"Periodic Table of the Elements | Sigma-Aldrich." <a href="https://www.sigmaaldrich.com/technical-documents/articles/biology/periodic-table-of-elements-names.html">https://www.sigmaaldrich.com/technical-documents/articles/biology/periodic-table-of-elements-names.html</a>. Accessed 2 Mar. 2020. "Chem4Kids." <a href="http://www.chem4kids.com/">http://www.chem4kids.com/</a>. Accessed 2 Mar. 2020. &#160;"Dynamic Periodic Table." <a href="https://ptable.com/">https://ptable.com/</a>. Accessed 2 Mar. 2020. "Periodic Table &#8211; Royal Society of Chemistry." <a href="https://www.rsc.org/periodic-table">https://www.rsc.org/periodic-table</a>. Accessed 2 Mar. 2020.

My name is Caleb and I'm in the 8th grade and im 13 years old. I like playing basketball, video games and football. I have   3 sisters and 1 brother. I am the second oldest child. Science is my favorite school subject because i get to learn about matter, chemicals and a whole lot of other stuff,

Radium was discovered in 1894 by Pierre and Marie Curie. Its melting point is 696 degrees celsius and boiling point is 1500 degrees celsius. It is soft shiny and silver and is a metal. It is very rarely used because of how radioactive it is which is why not many people know what it is. Despite its lack of usage it can be used to treat prostate cancer. I also has no biological role. 

Most of the elements I just talked about are being used for things like this image. They are used for cords and wires and even aircraft engines which all are a big part about today's technology.

Hafnium was discovered in 1923 and discovered by George Charles de Hevesy and Dirk Coster. Its melting point is 2223 degrees celsius and boiling point 4600. Its a very shiny metal that can be used in wires. It is mostly used in metal rods and nuclear submarines because of its abilities to absorb neutrons. it is not very common and is found in zirconium but not very known because only most zirconium contains only 5% of hafnium.

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