1. Chromium Jocelyn Albrecht Period 8

2. Important #’s Symbol: Cr Atomic Number: 24 Atomic Mass: 51.9961 Boiling Point: 2672.0 Degrees Celsius or 4841.6 Degrees Fahrenheit Melting Point: 1857.0 Degrees Celsius or 3374.6 Degrees Fahrenheit Density: 7.199 cm3

3. Important #’s II Most Abundant physical state: Solid Number Of Protons: 24 Number Of Electrons: 24 Number Of Neutrons: 28 Number Valence Electrons: 3d5, 4s1

4. Element Facts Electron Configuration:[Ar] 3d 5 4s 1 Element Group: 6 Element Period: 4 Element’s Usual Charge: +6, +3 Element Color: Gray Element Odor: No Odor Element Toxicity: Its Low because you can eat 11 to 45 micrograms per day by eating a variety of foods Common Isotopes: 50 Cr (4.3%) 52 Cr (83.8%) 53 Cr(9.6%) 54 Cr (2.4%)

5. Who? When? How? The element Chromium was discovered by Louis-Nicholas Vauquelin in 1797. It got its name from the Greek word (chroma) meaning “color”, Because of the variety of colors its compounds display (For Example) Chromium Fluoride (Green) and Chromium Oxide (Deep Red).

6. Did You Know? The Element Chromium is so abundant it’s the earth’s 21 st most abundant element and 6 th transition metal This element naturally occurs in many such as Rocks, Animals, Plants And Soil.

7. Common Uses. Dyes And Paints Stainless Steel Metallurgy Chrome Plating Green Rouge Metal Polish Magnetic Tape Hexavalent Chromium Chromium Trioxide

8. Interesting Right? The Element Chromium can affect your body in the following places. Nose and Sinuses Mouth and Tongue Skin Respiratory tract and Lungs Stomach and Intestines

9. Work Cited “Chromium.” http://www.dietitian.com. Larsen Joanne, 2009. Web. 28 May. 2010.http://www.dietitian.com “Periodic Table: Chromium.” http://www.chemicalelements.com. Bentor Yinon, 2009. Web. 28 May. 2010. http://www.chemicalelements.com “Element Chromium.” http://environmentalchemistry.com. Barbalace L Kenneth, 2010. Web. 28 May. 2010.http://environmentalchemistry.com