About the Element Silicon

Periodic Table Element number: 14
Silicon:Silicon element image


Atomic Number: 14
Element Symbol: Si
Name: Silicon
Name Origin: Latin silex, silicus, “flint”
Element Type: Metalloid
Atomic Mass of Element: 28.0855
Melting Point: 1410
Boiling Point: 2355
Neutrons: 14
Density: 2.329
Crystal Structure: Cubic, face centered

Discovery Information:
Who: Jons Berzelius
Year: 1823

Silicon Used in glass as silicon dioxide (SiO2).
Silicon is used as a semiconductor to make microchips for electronics (like your computer).
Silicon is also used in solar cells, tools, cement, LCDs, grease and oils.

Fine powder of silicon is highly flammable.
It causes serious lung disease known as silicosis often occurred in miners, stonecutters, and others who were engaged in work where siliceous dust was inhaled in great quantities.

About the Element Aluminum

Periodic Table Element number: 13
Aluminum Element Information:Aluminum element image
Atomic Number: 13
Element Symbol: Al
Name: Aluminum

Element Type: Other Metal
Atomic Mass of Element: 26.98154
Melting Point: 660
Boiling Point: 2467
Neutrons: 14
Density: 2.702
Crystal Structure: Cubic, face centered

Discovery Information:
Who: Hans Christian Oersted
Year: 1825
Place: Denmark

Name Origin
Latin: alumen (alun).

Aluminium powder is flammable.
Aluminium reacts very exothermically with halogens.
Aluminium is one of the few abundant elements that appears to have no beneficial function in living cells, but a few percent of people are allergic to it.

Aluminium alloys form vital components of aircraft and rockets as a result of their high strength to weight ratio.
Most electronic appliances that require cooling of their internal devices like transistors, CPUs – semiconductors in general have heat sinks that are made of aluminium due to its ease of manufacture and good heat conductivity.
Aluminium oxide (Al2O3), alumina is used in glass making.
Powdered aluminium is a commonly used silvering agent in paint.

About the Element Magnesium

Periodic Table Element number: 12
Element Magnesium Information:Element Magnesium image

Atomic Number: 12
Element Symbol: Mg
Name: Magnesium
Element Type: Alkaline Earth Metal
Atomic Mass of Element: 24.305

Boiling Point: 1363K (1090°C)
Melting Point: 923K (650°C)

Neutrons: 12

Density: 1.738

Crystal Structure: Hexagonal

Discovery Information:

Who: Sir Humphrey Davy
Year : 1808
place : England

Name Origin
From Magnesia ancient city in Asia Minor.

Magnesium reacts violently with halogens.

Magnesium powder is an explosion hazard.

Magnesium metal and alloys are highly flammable in their pure form when molten, as a powder, or in ribbon form.


Magnesium oxide and other compounds also are used in agricultural, chemical, and construction industries.

Used in alloys to make airplanes, missiles, car engine parts, racing bikes and other things that need light metals.

Used in fireplace bricks, flashbulbs, pigments and filters.

Magnesium powder is still used in the manufacture of fireworks and marine flares where a brilliant white light is required.

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