3.02 Group names and properties
My Element: Gold
Origin of name: From the Old English word geolo (yellow)
Symbol: Au
Atomic Number: 79
Atomic Mass: 196.96655 amu
Group/section: Gold is element number 79 found in group 11 period 6
Electron configuration: [Xe] 4f14 5d10 6s1
Valence electrons: 1
Physical or chemical properties:
Color: gold
Crystal Structure: Cubic
Density at 293 K: 19.32 g/cm3
Melting Point: 1064.43 °C (1337.5801 K, 1947.9741 °F)
Boiling Point: 2807.0 °C (3080.15 K, 5084.6 °F)
Number of Neutrons: 118
Gold is both malleable and ductile.
Mineral hardness: 2.5 (no units)
Date of Discovery: circa 3000 BC
Historical and modern uses of gold: electronics, jewelry, coins
Cites: http://www.chemicalelements.com/elements/au.html http://www.webelements.com/gold/physics.html Your presentation should include the following information: the element's name and the origin of its name the element's symbol, atomic number, and atomic mass the group/section where the element is found on the periodic table the element’s electron configuration and number of valence electrons.
At least eight other researched physical and chemical properties of the element should be mentioned. These properties may include but are not limited to: color texture ability to conduct electricity density state at room temperature common compounds it forms luster malleability ductility boiling point melting point potential hazards of the elements and/or its compounds when the element was discovered and/or created, if this information is known common historical and/or modern uses for this element citations of the resources (web sites, books, encyclopedias, etc.) that you used for your research
Be sure to review the grading rubric for this assignment before you submit the presentation to your instructor.
Origin of name: From the Old English word geolo (yellow)
Symbol: Au
Atomic Number: 79
Atomic Mass: 196.96655 amu
Group/section: Gold is element number 79 found in group 11 period 6
Electron configuration: [Xe] 4f14 5d10 6s1
Valence electrons: 1
Physical or chemical properties:
Color: gold
Crystal Structure: Cubic
Density at 293 K: 19.32 g/cm3
Melting Point: 1064.43 °C (1337.5801 K, 1947.9741 °F)
Boiling Point: 2807.0 °C (3080.15 K, 5084.6 °F)
Number of Neutrons: 118
Gold is both malleable and ductile.
Mineral hardness: 2.5 (no units)
Date of Discovery: circa 3000 BC
Historical and modern uses of gold: electronics, jewelry, coins
Cites: http://www.chemicalelements.com/elements/au.html http://www.webelements.com/gold/physics.html Your presentation should include the following information: the element's name and the origin of its name the element's symbol, atomic number, and atomic mass the group/section where the element is found on the periodic table the element’s electron configuration and number of valence electrons.
At least eight other researched physical and chemical properties of the element should be mentioned. These properties may include but are not limited to: color texture ability to conduct electricity density state at room temperature common compounds it forms luster malleability ductility boiling point melting point potential hazards of the elements and/or its compounds when the element was discovered and/or created, if this information is known common historical and/or modern uses for this element citations of the resources (web sites, books, encyclopedias, etc.) that you used for your research
Be sure to review the grading rubric for this assignment before you submit the presentation to your instructor.