Group+06

Abbey M. Elements in group 06 

My elements are Chromium, Molybdenum, Tungsten and Seaborgium. These elements are all metals that are very shiny and metallic and they all have very high melting points. They are all solids in room temperature. There are two electrons in the outer shell.

1. __Chromium (Cr)__ Atomic Number: 24 Atomic mass of 52.0. Naturally occurring chromium is composed of three stable isotopes; 52Cr, 53Cr and 54Cr with 52Cr being the most common. __The History of Chromium:__ -It was discovered by the Qin Dynasty in the Terracotta Army. -It was discovered in the 3rd Century BC. -It was discovered in China. __Physical and Chemical properties:__ Freezing Point: 1,907°C Boiling Point: 2,672°C Density Of: 7.18 Evaporation Heat: 342 Solubility: Insoluble in water, acids, alcohols, and alkalies. Ductility: Chromium is very brittle, therefore inductile. Malleability: it isn't malleable. State at room temp. is: Solid. Reactivity to oxygen: Chromium does not react to oxygen. Chromium is remarkable for its magnetic properties: it is the only elemental solid which shows antiferromagnetic ordering at room temperature (and below) Above 38 °C, it transforms into a paramagnetic state.  **__Uses Includ__ __e:__ ** The metal chromium is used mainly for making steel and other alloys plus pigments and dyes. Fun Fact: We use chrome yellow to paint our school buses. Chrome Alum and Chromiun (lll) sulfate, are used in the tanning of leather Compounds Are: CrF2, CrF3, CrF6, CrF4, CrF5, CrCl2, CrCl3, CrCl4, CrBr2, CrBr3, CrBr4, CrI2, CrI3, CrI4, CrO2, CrO3, Cr2O3, Cr3O4, CrS, Cr2S3, CrSe, Cr2Te3, CrN, and Cr(CO)6. 



2. __Molybdenum (Mo)__ Atomic number of 42 Atomic mass of 95.9. Seven isotopes happen naturally, with atomic masses of 92, 94, 95, 96, 97, 98 and 100. Only molybdenum-92 and molybdenum-100 are unstable of these. There are 35 known isotopes of this element ranging in atomic mass from 83 to 117. __The History of Molybdenum__: - It was first discovered by Carl William Scheele - It was first discovered in 1778 - It was first discovered in Sweden __Physical And Chemical Properties__ - Freezing Point: 2,623°C - Only burns at temperatures above 600°C - Boiling Point: 4,825°C - Density of g.cm -3 at 20°C - Reactivity to oxygen: Stays stable -Ducitlity: Molybdenum is ductile. -Molybdenum is a solid at room temperature. - Molybdenum has good thermal and electrical conductivity. -Molybdenum is malleable. - For the most part Molybdenum stays stable, except for some cases like Nitrogen when Nitriding starts or Flourine when flouride starts. __The compounds are__: MoF3, MoF4, MoF6, Mo4F20, MoCl2, MoCl3, MoCl6, MoCl4, MoCl5, MoBr3, MoBr4, MoI2, MoI3, MoI4, MoO, MoO2, MoO3, MoS2, Mo2S3, MoSe2, MoTe2, MoN, and Mo(CO)6. Fun Fact: Molybdenum has the sixth-highest melting point of all the elements.
 * __Uses Include__:** manufacture of aircraft parts, an alloy for stainless steel products, and constructional steel are all uses of molybdenum and compounds. Molybdenum-99 is a radioisotope like technetium-99(m), which is used in many medical procedures



3 . __Tungsten (W)__ Atomic number of 74 Atomic mass of 183.8. There are five natural isotopes that are considered stable. They're as so: W-180, W-182, W-183, W-184, and W-186. __Physical and Chemical Properties__  <span style="color: #c419fa; font-family: Georgia,serif; font-size: 110%;">//<span style="font-family: Georgia,serif;">- //Brittle and hard to work - Freezing Point of 3,422°C - Density: <span style="-webkit-border-horizontal-spacing: 2px; -webkit-border-vertical-spacing: 2px; color: #c419fa; font-family: Georgia,serif; font-size: 110%; line-height: normal; webkitborderhorizontalspacing: 2px; webkitborderverticalspacing: 2px;">19.3 g.cm-3 at 20°C - Boiling Point: 5,660°C - Tungsten is ductile. - Tungsten is not flammable. -Tungsten is malleable. - <span style="color: #c419fa; font-family: Georgia,serif;"> Reactions of Tungsten: Reactions with water: At room temperature, tungsten does not react with water. Reactions with air: At room temperature, tungsten does not react with air or oxygen. - The thermal conductivity of Tungsten is 173 W m-1 K-1 and the electrical conductivity is 18.2 x 106 S m-1 - Tungsten is a solid in room temperature. - Tungsten is not a good conducter of heat and electricity. __**Uses**:__ <span style="color: #cc36f7; font-family: Georgia,serif; font-size: 110%;">The pure form is used mainly in electrical applications, but its many compounds and alloys are used in many applications, most notably in incandescent light bulbfilaments <span style="color: #c419fa; font-family: Georgia,serif; font-size: 110%;">, X-ray tubes (as both the filament and target), and super alloys. The compounds of Tungsten were not listed. __Compounds__: WF6, WF4, [WF5]4, WCl2, WCl6, WCl4, <span style="-webkit-border-horizontal-spacing: 2px; -webkit-border-vertical-spacing: 2px; font-family: Georgia,serif; font-size: 14px; line-height: normal;">[WCl5] <span style="-webkit-border-horizontal-spacing: 2px; -webkit-border-vertical-spacing: 2px; font-family: Georgia,serif; line-height: normal;">2, <span style="-webkit-border-horizontal-spacing: 2px; -webkit-border-vertical-spacing: 2px; font-family: Georgia,serif; font-size: 14px; line-height: normal;">[W6Cl12]Cl <span style="-webkit-border-horizontal-spacing: 2px; -webkit-border-vertical-spacing: 2px; font-family: Georgia,serif; line-height: normal;">6, WBr3, WBr6, WBr4, WBr5, <span style="-webkit-border-horizontal-spacing: 2px; -webkit-border-vertical-spacing: 2px; font-family: Georgia,serif; font-size: 14px; line-height: normal;">W6Br <span style="-webkit-border-horizontal-spacing: 2px; -webkit-border-vertical-spacing: 2px; font-family: Georgia,serif; line-height: normal;">14, WI2, WI3, WI4, WO2, WO3, WS2, WS3, WSe2, WTe2, <span style="-webkit-border-horizontal-spacing: 2px; -webkit-border-vertical-spacing: 2px; font-family: Georgia,serif; font-size: 14px; line-height: normal;">W(CO) <span style="-webkit-border-horizontal-spacing: 2px; -webkit-border-vertical-spacing: 2px; color: #c419fa; font-family: Georgia,serif; font-size: 12px; line-height: normal; webkitborderhorizontalspacing: 2px; webkitborderverticalspacing: 2px;">6 Fun Fact: <span style="color: #c419fa; font-family: Georgia,serif; font-size: 110%;">It is remarkable for its strong and healthy physical properties, especially the fact that it has the highest melting point of all the non-alloyed metals and the second highest of all the elements after Carbon.



<span style="background-color: #ffffff; color: #3daaf0; display: block; font-family: Tahoma,Geneva,sans-serif; text-align: left;">4. Seaborgium (Sg) Atomic Number: 106 Atomic Mass: 266.0 Isotopes include: Sg- 258, Sg- 259. Sg- 260, Sg - 261, Sg- 262, Sg- 263, Sg- 263m, Sg - 264, Sg- 265, Sg- 266, Sg - 267, Sg - 268, Sg- 269, Sg - 270, Sg - 271, Sg- 272, and Sg - 273. Below is the electronic structure of seaborgium. The History of Seaborgium: - Was discovered by a team of scientists led by Albert Ghiorso - Was found in 1974 - Was first found in Berkley, California Because Seaborgium does not last very long, it is difficult to take a proper picture, so here is the electronic structure of Seaborgium.

<span style="font-family: Impact,Charcoal,sans-serif; font-size: 130%;">__Bibliography__

<span style="font-family: 'Times New Roman',Times,serif; font-size: 16px; line-height: 32px;">//<span style="font-family: 'Trebuchet MS',Helvetica,sans-serif;">1. <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 90%; font-style: normal;">Websites <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-style: normal;">: <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif;">-H // <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif;">ttp:en.wikipedia.org/wiki/Chromium. Wikipedia, 11 Dec. 2009. Web. 8 Dec. 2009.<span style="font-family: Arial,Helvetica,sans-serif;"> - Http:en.wikipedia.org/wiki/Molybdenum. Wikipedia, 11 Dec. 2009. Web. 8 Dec. 2009.<span style="font-family: Arial,Helvetica,sans-serif;"> - Http:en.wikipedia.org/wiki/Tungsten. Wikipedia, 11 Dec. 2009. Web. 8 Dec. 2009.<span style="font-family: Arial,Helvetica,sans-serif;"> - Http:en.wikipedia.org/wiki/Seaborgium. Wikipedia, 6 Nov. 2009.<span style="font-family: Arial,Helvetica,sans-serif;"> - Http:www.webelements.com/seaborgium/atoms.html. Web Elements, 2009. Web. 8 Dec. 2009. //- Http://www.encyclopedia.com/topic/molybdenum.aspx//. Columbia Encyclopedia, 2009. Web. 16 Dec. 2009.

2. Book: -Iron Chromium and Manganese//. Vol. 4. Danbury: Atlantic Europe, 1996. Print. Elements. //<span style="font-family: Arial,Helvetica,sans-serif;"> <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif;"> 3. Encyclopedia: -Chromium //. 9th ed. Vol. 4. New York City: McGraw-Hill, 2002. 136. Print. ||