Chromium Research Paper

Chromium, the seventh most abundant element on earth is a transition metal from group VI-B .It is found in nature as the bound form constituting approximately 0.1 – 0.3 mg.g-1 of the earth’s crust. The name of the element is derived from the Greek word "chroma" meaning color, because many of its compounds are intensely colored. Cr is able to exist in several oxidation states, of which the trivalent Cr (III) and hexavalent Cr (VI) species are the most stable and abundant forms (Zayed & Terry et al., 2003).

Every element is special because none are ever the same. Even an atoms isotope is different. Krypton’s atomic number is 36. Its atomic mass is 83.798 units. The number of protons in an element, which is also the atomic number, is 36. It also

Chlorine has 17 protons, 18 neutrons, and 17 electrons. It's atomic number is 17 and the atomic mass is 35.45. Its symbol on the periodic table is Cl.

The world was rocked in the aftermath of World War II. The destruction left in its wake would not only have us rebuilding and piecing together our governments, cities, and economies; but our humanity as well. A humanity that was shattered in the face of consequence and a confrontation of our darkest depths of humanity; the act of war. Word of human violation spread like wildfire post world war in occupation and battle hotspots. Happenings most inane, so inhumane, they were be hard to believe that they were true. Fortunately, the spread of globalization along with the after effects of war prompted nation leaders to convene and build together a framework, a concept of Human Rights. This very act prompted Non-Governmental Organizations that watchdog and protect the interest of our basic rights to arise. The weakest and most innocent among us requires the most protection. They are our legacy and they are our future. They are our children.

Cyanide is a compound that consists of a carbon nitrogen bond. There is a triple bond from the carbon atom to the nitrogen atom. Cyanide has many usages but can also be very dangerous to the people that are handling the substance. This compound is used in photography, fishing, mining, and papermaking. While it seems efficient in these different activities, it is extremely deadly. This substance is a quickly acting poison that can kill someone in a short period of time. In our poster we went over many different subjects regarding this infamous compound including natural occurrences, pollution caused by the substance, human usages, and future use.

The name of my element is carbon. Its symbol is the letter “C” and its atomic number is 6. Its atomic mass is 12.0107. Carbon’s abundance on the earth’s crust is 200 parts per million by weight and 344 parts per million by moles. You can buy 100g of carbon for $2.40.

Hi I’m Calcium I have 20 protons, 20 electrons, and 20 neutrons. My atomic number is 20 and my atomic mass number is 40. My number of electrons in energy level is 20 and my energy level number is 20. Also the period number I belong in for the periodic table is 4. The discovery name is Humphry Davy and he was the one that made me. The year that I was discovered was 1808 and the country they decided to discover me was in England. My element symbol is Ca.

Industry is the leading cause of hexavalent chromium contamination, and the United States is the world leader in hexavalent chromium generation. The major producers among all industry are the electroplating companies which is located in Garfield New Jersey and many other sites (EPA 1998; ATSDR 2000). As numerous as the electroplating companies are, there are still many industries where hexavalent chromium is produced in a big quantities. Wood treatment, leather tanning, chemical production companies, paint pigment production companies, and of course, mining operations can all generate various amounts of hexavalent chromium.

56% of our population in The United States uses tap water on a daily basis. We shower in it, drink it, cook with it, and water out plants with it. How can we know that our water is safe? Well, yearly groundwater tests should be taken. Even if they are expensive; it is better to pay the small amount now, than having to pay millions of dollars for the health expenses of people later. There is a huge chance that chromium could be in our water; chromium is a chemical that is used extensively by different industries. For example, it is used to prevent corrosion in pipes (PG&E), leather tanning and electroplating. Electroplating is the process of changing the surface of a metal to prevent the surface from wearing out; this is widely used on cars,

The element Fluorine is an extraordinary element. The uses for this element are vast and very extensive. This element was discovered in 1810 and very long ago. The element was discovered by Henri Moissan. The origin of the word ”Fluorine” came from the Latin word fluere meaning “to flow”. F is the symbol for Fluorine to make it shorter.

Scientists have recently discovered the new element zinc. This element can be used for many different things and has very interesting things recently discovered by scientist.

After thoroughly reading this week’s material, the specific weapon I have chosen is a chemical compound such as sodium or potassium cyanides. I have chosen cyanides to be a potential weapon used, simply because it is a more discrete way to harm mass casualties. According to the CIA, “typical plots focus on poisoning foods or spreading the agent on surfaces to poison via skin contact” (CIA 2007).

The name Krypton comes from the Greek word krytos which means hidden. The atomic symbol for the element in the periodic table is Kr. The atomic number is 36, which means the number of protons or electrons in the nucleus. The average weight is 8.738 in atomic weight units. The number of Neutrons it contains is 48. The gas density is 3.749 g/liter at 0 C. The melting point for the element is -157.20 °C and its boiling point is-153.2 °C. Krypton is a colorless, odorless, and tasteless element.

According to McIver, Grizales, Brownstein & Goldfine (2015), chromium is an important trace element acts as a cofactor in maintaining normal lipid and carbohydrate metabolism . There are studies that suggest that chromium helps to control blood sugar levels. According to Feng, Weiwei, Zhao, Ting, Mao, Guanghua, Wang, Wei, Feng, Yun, Li, Fang,Wu, Xiangyang (2015), chromium can improve how the body uses insulin and decreases the insulin requirements in people with type 2 diabetes. Chromium helps the body to uptake glucose and transport it to improve the metabolism of glycogen and glycogen metabolizing relating enzymes. In addition, chromium helps with insulin signaling. Glycogen and protein synthesis depends on insulin signaling and when one

Lawrencium is number 103 on the periodic table Lawrencium got its named after Ernest O. Lawrence the man who discovered the cyclotron a device used to to discover many artificial radioactive elements , was also found in the Lawrence Radiation Laboratory in Berkeley California 1961. This element is the most stable isotope ,Lawrencium has a half life of about 4 hours . Only tiny amounts of Lawrencium have been produced so there no use for it outside of scientific research , the atoms of the element is very small and by Lawrencium having a low half life it does not 't really give scientists a chance to research the element so this means scientists really do not know much about this element . Lawrencium boiling point is 2,960 degrees fahrenheit