Osmium Research Paper

Scientists at the Join Institute of Nuclear Research in Dubna, Russia and scientists at the Lawrence Livermore National Laboratory in California discovered element 117 or, tennessine, in 2010. With an atomic mass/weight of 294 making it the second heaviest element known to mankind behind element 118 or, Oganesson. Before being named tennessine by the International Union of Pure and Applied Chemistry (IUPAC) in 2016, tennessine had the place holder name of ununseptium, which means one-one-seven in Latin. Tennessine was created by fusing berkelium-249 atoms with calcium ions until tennessine atoms formed. Since tennessine is radioactive, it has zero stable isotopes. Tennessine’s most stable isotope, however, is tennessine, which has a half-life of about 80 milliseconds. Only six atoms of tennessine have been artificially created to this day.

My element is Silver. The atomic number of silver (Ag) is 47. Silver is in group 11 and period 5. The mass number of Silver is 107, and its electron configuration is [Kr] 4d^10 5s^1. Silver was one of the first five metals discovered and used by humans. Silver’s melting point is 1,763.2 degrees fahrenheit. Silver is commonly used to make mirrors, as it's the best known reflector of light. Silver is also commonly in silverware, where the appearance is important. Silver is most commonly used in jewelry, where sterling silver is 92.5% silver.

Titanium was discovered by Reverend William Gregor in 1791, who had an interested in minerals he recognized the presence of a new element.

Titanium the 22nd element on the periodic table it was discovered in 1791 in England and was first produced by Matthew A. Hunter an American metallurgist in 1910. The word titanium come from Latin meaning titans in mythology the first sons of earth. Titanium was primarily found in sphene, rutile, and ilmenite. It makes up 0.57% of earth’s crust.

Strontium was discovered by an Irish chemist named Adair Crawford. Crawford discovered strontium in 1790 while studying the mineral witherite. He combined witherite and hydrochloric acid. He assumed that his sample was contaminated with an unknown mineral he named strontium.

There have been many elements that have been discovered in this world. The two latest elements that have been discovered are ununquadium and ununhexium. Ununquadium is element number 114 on the periodic table. It was given the official name of flerovium by the IUPAC in 2012. Ununhexium is element 116 on the periodic table. It was given the official name of livermorium by the IUPAC in 2012. There are two other elements that have been discovered, but not yet confirmed. Those elements are ununtrium and ununpentium. Ununtrium is element 113 on the periodic table and it has no official name yet. Ununpentium is element 115 on the periodic table and also has no official name yet.

Californium was first made in 1950 at Berkeley, California, by a team consisting of Stanley Thompson, Kenneth Street Jr., Albert Grierson, and Glenn Seaborg. They made it by firing helium nuclei at curium-242. The process yielded the isotope californium-245 which has a half-life of 44 minutes.

My element is lead, lead is a good element, lead is used alot in science. Leads symbol is Pb and the atomic number is 82. It is sometimes found in nature but is usually obtained from ores. Lead only makes up 0.0013% of earth's crust but is not considered a rare element since it's easily mined and refined.

A popular use for radium then was to make objects glow in the dark. Young girls would paint the dials and faces of clocks using radium. While painting these clocks, the girls were taught to point the tip of their brush with their lips. That alone would expose them to radium more than 100 times a day. Not only did they expose their mouths to radium but during their breaks they would put it in their hair, on their fingernails and even on their teeth. None of them knowing what health problems this would cause. In later years their teeth would start falling out and they would get mouths sores because they had developed mouth cancer. Many of these young girls died. Radium was also popularly used in chocolate bars, makeup, spas, and

Glenn T. Seaborg, Joseph W. Kennedy, Edwin McMillan, and Arthur Wahl discovered it in 1940.

Who discovered this element: William Gregor discovered the element in 1791. He was an amatuer geologist in England. While he was looking in a stream he noticed a sandy substance that happened to look like gunpowder and was magnetic. He named the element manaccanite after the place where he discovered it. A little while later in 1795 a well known chemist named Martin Klaproth ended up changing the name of the element to titanium after the Titans sons of Greek Gods and Goddesses.

Titanium was discovered in 1791 by amateur geologist, William Gregor, as an inclusion of a mineral in Cornwall, Great Britain. Gregor recognized there was a new element present in Ilmenite, when he found black sand by a stream and noticed the sand was attracted by a magnet. He determined the presence of two metal oxides: iron oxide and 45.25% of a white metallic oxide that was unidentifiable. After realizing that the unidentified oxide contained a metal that did not match any known element, Gregor reported his findings to the Royal Geological Society

Chromium is a transition metal located in Group 6 of the periodic table and is steel grey in its pure form. It is the 21st most abundant element in the earths crust. It has many compounds that are colored, the most important compounds is the chromates of sodium and potassium; the dichromates; and potassium and ammonium chrome alums. Chromium was discovered by Louis-Nicholas Vauquelin in 1797. Vauquelin discovered that he could obtain metallic chromium by heating chromium oxide in a charcoal oven.

Platinum was discovered by Antonio de Ulloa in 1735. Ulloa established the first mineralogy lab in Spain and was the first to study platinum. Platinum was first recognized as an element in 1774 when Charles Wood isolated the ore with aqua regia. Then the pure form of platinum was found in the residue. However, there were more than one substance that was unknown in the residue. Hippolyte-Victor Collet-Descotils believed that there was an unidentified metals that caused the red color of some platinum salts. In 1803, William Hyde Wollaston investigated this by first dissolving the crude platinum ore in aqua regia. Then he was able to get to the platinum metal by dissolving the solution in ammonium chloride. The liquid which remained had properties which matched no known substance. Wollaston named it Rhodium. This was not the last element that Wollaston discovered that year. He used aqua regia to dissolve the platinum ore and isolated

In September 1860 the birth of the Periodic table began. A group of the world 's best chemists assembled in Germany to discuss the issues of atomic mass. At this meeting an Italian chemist, Stanislao Cannizzaro, introduced the right way to accurately measure the relative mass of an atom. After the new method was introduced chemists started to recognize similarities in the properties of various elements and placed them into families. In this earlier stages of the periodic table there were four main chemists; Dobereiner, Newlands, Lothar Meyer, and Dmitri Mendeleev that played a substantial role in the development of the periodic table. Dobereiner started with a few family groups each containing three elements. Newlands put the elements of those families in repeating groups called octaves. Meyer noted additional repeating properties. Mendeleev put it all together into what has become the periodic table of the elements.