Group+11Hr2

Group 11 Copper(Cu), Silver(Ag) , Gold(Au)

**Copper(Cu):** Electron Configuration: 1s2, 2s2, 2p6, 3s2, 3p6, 4s2, 3p6, 4s2, 3d9 Quantum Numbers: n:3, l:2, m:1, m1: -1/2

Atomic Number: 29 Atomic Mass: 63.546 Number of protons: 29 Number of neutrons: 35

Isotopes; Stable: 63Cu, 65 Cu Unstable: 61 Cu, 62 Cu, 64 Cu, 67 Cu Fun Facts: Only metal other than gold that has a natural color. Statue of liberty is covered with 200,000 pounds of copper sheeting. Archeologists have unearthed copper pipes that date back to 3,500 B.C. and are still good. In 1999 the U.S. used 36,000 pounds of copper to make pennies.

What does it look like. The color is brown red to deep brick red. I fit is exposed to oxygen for a long time it turns a teal color like the Statue of Liberty.

Physical Properties: A good electrical conductor, ductile, resistant to corrosion and wear. Chemical properties: Forms a teal surface when it is exposed to oxygen call ed patina.

= = = Gold(Au): = Electron Configeration:1s2,2s2,2p6,3s2,3p6,4s2,3d10,4p6,5s2,4d10,5p6,6s2,4f14,5d6,6p3 Quantum number:n: 6,L:1:m1:1,m2 1/2 Atomic number:79 Atomic mass:196.97 Number of protons:79 Number of neutrons:118 Number of electrons:79

isotopes Stable 197Au Unstable 194Au,195Au,196Au,198Au,199Au

Fun Facts 1.Gold has been around since 4000B.C 2.One ounce of gold can be drawn into 50 miles of wire 3.The world's gold supply goes up 2000 tons a year.

What does it look like. gold has a metallic yellow coloring

Chemical and Physical properties Has a metallic yellow color. Not very reactive therefore does not tarnish of corrode easily

Silver

Electron Configuration- 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s1 4d10 Quantum numbers- n-5 l-2 m1 1/2 Atomic number-47 Atomic mass 107.7 Number of protons- 47 Number of neutrons- 61 Number of electrons- 47 Isotopes: Stable- 107 ag, 109 ag Unstable- 105, 108, 110, 111 Fun facts- Has super bacterial qualities and Best metal conductor of electricity Description- white lustrous metal Chemical and Physical properties: Chemical- Reacts with silver compounds in the air but not oxygen Physical- Soft white shiny metal that is very ductile