Palladium

= ﻿__ Palladium __ = =__ Dicovery __-= =__ Basic Information- __= =__ Symbol __-= =__ Where it is found- __= =__ Physical Facts- __= =__ Uses __-= =__ Interesting facts- __= =__ Sources- __=
 * W.H. Wallaston discovered palladium
 * Palladium was discovered in 1803
 * Atomic number is 4
 * Atomic mass is 106
 * Number of protons- 46
 * Number of electrons- 46
 * Number of neutrons- 60
 * "Pd" is the atomic symbol
 * The name comes from the astroid, Pallas, and the greek goddess of wisdome
 * Palladium is found in solid form with other metals such as platinum, nickle, copper, silver, and gold
 * It is found on land
 * Melting point- 2830.8 Fahrenheit or 1554.9 Celsius
 * Boiling point- 5365 Fahrenheit or 2963 Celsius
 * Density- 12 grams per cubic centimeter
 * Abundance on Earth's crust-  1.5×10 -2 milligrams per kilograms on land
 * Springs for watches
 * Surgical instruments
 * Electrical contacts
 * Dental fillings and crowns
 * Jewelry
 * When palladium is alloyed with gold it creates a substance known as white gold
 * At room temperature palladium can hold up to 900 times its own volume in hydrogen
 * Palladium can be used for easy purification of Hydrogen when heated
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 * __periodic.lanl.gov/elements/46.html - 7k - 2005-04-19 __
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