INTRODUCTION
Palladium is a ductile, malleable, and resistant to corrosion metal that fuses more easily than platinum and can be welded easily.It forms divalent and tetravalent compounds and resembles platinum chemically.
It is an excellent adsorbent for some gases; it adsorbs 1000 to 3000 times its volume of hydrogen or acetylene gas when heated to 100°C (212°F).
BASIC INFORMATIONS
- Atomic Number
- 46
- Atomic Mass
- 106.42
- Atomic radius
- 0.128
- Ionization energy
- 804
- Electronic config
- 2,8,18,18
- Principal Valency
- N/A
- Density g/cm³
- 11.99
- Melting point °C
- 1554.9
- Boiling point °C
- 2963
- Type of Element
- Metal
- Electronegativity
- 2.2
- Element Category
- Nickel Group
- Appearance
- Silvery white solid
- Block
- d-block
- Period
- 5
- Group
- 10
- No of Isotopes
- 34
- Occurrence
- Combine form
- Abundance in ppm
- 0.015
- Year of Discovery
- 1803
EXTRACTION
Obtain as concentrates as anode sludge from electrolytic process of its constituent.
OXIDATION STATES
+6,+4,+2,+1,0 (Mildly Acidic)
MAJOR SOURCE
Platinum ore, and Canadian nickel ore.
EXAMPLES OF COMPOUND PRESENT
PdCl4
ECONOMIC IMPORTANCE
* Palladium is used in the field of communications, where it is used to face electrical contacts in automatic switchgear.
* it is used for hydrogenations such as phenol to cyclohexanone, and also for dehydrations.
* Palladium is used for non magnetic springs in clocks and watches.
* It is used for coating special mirrors, and in jewelry.
