Sibal,+Shania

= = Tin

Symbol of element: Sn

Group in periodic table: 14

Block in periodic table: p-block

Boiling point: 2602°C

Melting point: 231.93°C

Density: 7.287 grams per cubic centimeter

Protons: 50

Electrons: 50

Neutrons: 70

Atomic mass: 118.710

Atomic number: 50

Valence electrons: 5

Electron configuration: 2.8.18.18.4 __Bohr Model__


 * Chemical and physical properties.**

Liquid range: 2369.92 K

Superconduction temperature: -269.43 °C

Molar volume: 16.29 cm3

Mineral hardness: 1.5

Tin is more reactive than germanium, it is stable to water under certain conditions but when heating with steam, tin reacts with water to from tin dioxide and hydrogen.


 * Uses.**
 * To coat other metals to prevent corrosion
 * Window glass
 * In some toothpastes[[image:lvscience/tin2.jpg align="right"]]


 * Tin**

Tin has been around since ancient times, although we don't know who exactly discovered it, it's been said that it has been around for ages. The beginning of the Bronze Age started around 3000 BC, and tin was at least 10% of bronze. The Chinese were mining tin around the time of 700 BC in the province of Yunnan. Most of the world's supply of tin comes from Malaya, Bolivia, Indonesia, Zaire, Thailand, and Nigeria. The United States produces almost none, although small amounts have been found in Alaska and California. Tin is created by reducing the ore with coal in a reverberatory furnace.

Cost: pure, $24 per 100g. bulk, $1.80 per 100g

Some tin compounds are represented as anti-fouling paint for ships and boats to prevent barnacles, but even at low levels, these compounds put marine life especially oysters at very high health risks. Tin is thought to be an essential element for some living things and this may also for humans.
 * Interesting facts.**

http://www.webelements.com/ Mark Winter 1993-2011
 * Web Elements**

http://education.jlab.org/faq/index.html Thomas Jefferson National Accelerator Facility - Office of Science Education
 * Jefferson Lab**

http://www.chemicool.com/elements/tin.html David D. Hsu. of the Massachusetts Institute of Technology, Cambridge, MA 2004
 * Chemicool**