Oxygen+Group+by+Mitchel+and+Zach

media type="youtube" key="DimFS1ucxeQ" height="385" width="640"​ =The Chalcogens= ​ The Chalcogens are group six on the periodic table of the elements and they are also known as the Oxygen Group because the first element in the group is Oxygen. This group is a mix of non-metals and metalloids. The Chalcogens react with the Alkaline Earth Metals very well. Also, oxygen is very reactive with many elements. All members of this group have six electrons in their outer shells. All of these elements are solid at room temperature except for oxygen, which is a gas. The word "Chalcogen" means "ore-formers" because they are commenly found in ores. They were named in Germany in 1932 and the compounds they form are called "Chalcogenides."

The Element Polonium

 * Polonium's symbol is Po.
 * It has an atomic number of 84.
 * It's most common isotope has a mass of 209.
 * It was discovered by Marie Curie in 1898 and named after the country Poland.
 * It's melting point is 254 degrees Celcius and it's boiling point is 962 degrees Celcius.
 * It has valence numbers of +2 and +4.

Interesting Facts:
 * Polonium is very rare on earth and is usually found in pitchblende and Uranium ore.
 * It gives off radiation in the form of heat and alpha particles.
 * It is silvery grey in color.

The Element Sulfur
· The element symbol for sulfur is. . . . . . . . S. · It was discovered by Antoine Lavoisier in 1777.

· Its atomic number is 16 with an atomic mass of 32.065.

· Its melting point is at 115.21C and its boiling point is at 444.6C.

· Its valence numbers are +6, +4, -2.

Here are some interesting facts about sulfur:

· Its electro negativity is 2.5, it is also known as fool’s gold, also used as black gunpowder, and it is also used in fireworks.

· Some of the things this element is used in are manufacture of sulfuric acid, fertilizers, and lead-acid batteries.

· It was derived from the Latin word sulphurium.

Sources:
"Chalcogens." //Chemistry Explained//. N.p., n.d. Web. 8 Apr. 2010. .

"Facts About Sulfur." //Facts-About//. N.p., n.d. Web. 8 Apr. 2010. .

Gagnon, Steve. "It's Elemental - The Element Polonium." //Jefferson Lab//. N.p., n.d. Web. 8 Apr. 2010. .

Thompson, Marilyn, Charles Mclaughlin, and Dinah Zike. //Physical Science//. Columbus, OH: McGraw Hill, 2002. Print.

Gagnon, Steve. "It's Elemental - The Element Sulfur." //Jefferson Lab//. N.p., n.d. Web. 8 Apr. 2010. .

"Visual Elements - Sulfur." //Rsc.org//. N.p., n.d. Web. 8 Apr. 2010. .