Zinc

Element Zinc by Tu Tran Group 12, Period 4 Atomic Number: 30 Atomic Mass: 65.39 Atomic Symbol: Zn Zing Oxide
 * **Electron Configuration:**1s2 2s2p6 3s2p6d10 4s2
 * **Electrons per Energy Level:** 2,8,18,2
 * **Number of Electrons (with no charge):** 30
 * **Number of Neutrons (most common/stable nuclide):** 35
 * **Number of Protons:** 30
 * **Oxidation States:** 2
 * **Valence Electrons:** 4s2

Chemical Properties of Zinc

 * **Electrochemical Equivalent:** 1.22g/amp-hr
 * **Electron Work Function:** 4.33eV
 * **Electronegativity:** 1.65 (Pauling); 1.66 (Allrod Rochow)
 * **Heat of Fusion:** 7.322kJ/mol

Physical Properties of Zinc
>> **Thermal:** 1.16 W/cmK
 * **Atomic Mass Average:** 65.39
 * **Boiling Point:** 1180K 907°C 1665°F
 * **Coefficient of lineal thermal expansion/K-1:** 25E-6
 * **Conductivity****Electrical:** 0.166 106/cm
 * **Density:** 7.13g/cc @ 300K

**Date of Discovery:** 1746
 * [[image:isotumap.JPG]]
 * Discoverer:** Andreas Marggraf
 * Name Origin:** From the German word //zin// (meaning tin)
 * Uses:** metal coating, rust protection, brass, bronze, nickel
 * Obtained From:** zinc blende, calamine

= Uses = The metal is employed to form numerous alloys with other metals. Brass, nickel silver, typewriter metal, commercial bronze, spring bronze, German silver, soft solder, and aluminum solder are some of the more important alloys.

Costs
The price of zinc was roughly $0.70/lb in January 1990.