can you tell something interesting about Pb and Fe??

Question

i am doing it for my chemistry project... please hlp and thank you

Answer 1

Name: iron
Symbol: Fe
Atomic number: 26
Atomic weight: 55.845 (2)
Group in periodic table: 8
Group name: (none)
Period in periodic table: 4
Block in periodic table: d-block

Standard state: solid at 298 K
Colour: lustrous, metallic, greyish tinge

History:
Origin of name: From the Anglo-Saxon word "iron" or "iren" (the origin of the symbol Fe comes from the Latin word "ferrum" meaning "iron"). Possibly the word iron is derived from earlier words meaning "holy metal" because it was used to make the swords used in the Crusades.

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Notes
Iron was known in prehistoric times. Genesis says that Tubal-Cain, seven generations from Adam, was "an instructor of every artificer in brass and iron." Smelted iron artifacts have been identified from around 3000 B.C. A remarkable iron pillar, dating to about A.D. 400, remains standing today in Delhi, India. This solid pillar is wrought iron and about 7.5 m high by 40 cm in diameter. Corrosion to the pillar has been minimal despite its exposure to the weather since its erection.

Sometime prior to the autumn of 1803, the Englishman John Dalton was able to explain the results of some of his studies by assuming that matter is composed of atoms and that all samples of any given compound consist of the same combination of these atoms. Dalton also noted that in series of compounds, the ratios of the masses of the second element that combine with a given weight of the first element can be reduced to small whole numbers (the law of multiple proportions). This was further evidence for atoms. Dalton's theory of atoms was published by Thomas Thomson in the 3rd edition of his System of Chemistry in 1807 and in a paper about strontium oxalates published in the Philosophical Transactions. Dalton published these ideas himself in the following year in the New System of Chemical Philosophy. The symbol used by Dalton for iron is shown below. [See History of Chemistry, Sir Edward Thorpe, volume 1, Watts & Co, London, 1914.]


Iron is a relatively abundant element in the universe. It is found in the sun and many types of stars in considerable quantity. Iron nuclei are very stable. Iron is a vital constituent of plant and animal life, and is the key component of haemoglobin.

The pure metal is not often encountered in commerce, but is usually alloyed with carbon or other metals. The pure metal is very reactive chemically, and rapidly corrodes, especially in moist air or at elevated temperatures. Any car owner knows this. Iron metal is a silvery, lustrous metal which has important magnetic properties.

Iron filings salts cause sparks in flames.

Uses:
pig iron is an alloy containing about 3% carbon with varying amounts of S, Si, Mn, and P. It is hard, brittle, fairly fusible, and is used to produce other alloys, including steel
wrought iron contains a few tenths of a percent of carbon, is tough, malleable, less fusible, and has usually a "fibrous" structure
carbon steel is an alloy of iron with carbon, with small amounts of Mn, S, P, and Si
alloy steels are carbon steels with other additives such as nickel, chromium, vanadium, etc
iron is the cheapest and most abundant, useful, and important of all metals

Pb:

From the Anglo-Saxon word "lead; Latin, plumbum" (the origin of the symbol Pb is the Latin word "plumbum" meaning "liquid silver"

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Notes
Lead has been known for ages and is mentioned in Exodus. Alchemists believed lead to be the oldest metal and associated it with the planet Saturn. They spent a lot of time trying to "transmute" lead into gold.

Lead is one of the elements which has an alchemical symbol, shown below (alchemy is an ancient pursuit concerned with, for instance, the transformation of other metals into gold).

Uses
The following uses for lead are gathered from a number of sources as well as from anecdotal comments. I'd be delighted to receive corrections as well as additional referenced uses (please use the feedback mechanism to add uses).

the metal and the dioxide are used in storage batteries
cable covering, plumbing, ammunition
manufacture of PbEt4 - an antiknock compound in petrol. Environmental concern with lead poisoning, (and cheaper unleaded petrol prices) is slowly resulting in less use of lead in petrol
the metal is very effective as a sound absorber
a radiation shield around X-ray equipment and nuclear reactors
used extensively in paints, although recently the use of lead in paints has been drastically curtailed to eliminate or reduce health hazards
the oxide is used in producing fine "crystal glass" and "flint glass" with a high refractive index for achromatic lenses
solder
used by the Romans for plumbing (the decline of the Roman empire is attributed to lead in the water supply!)
used to contain corrosive liquids
alloying
cable covering
ammunition
shield against X-rays
oxide used to produce crystal glass
insecticides

Answer 2

The word plumbing comes from the Latin for Lead (Pb).
Pb is now practically an icon of heavy metal pollution. Once used extensively in plumbing paint and gasoline (all for different reasons!), it is still hard to find a home or workplace that is free of it.

Iron is the most stable nucleus.
Fe has an entire age named after it "the iron age"
Iron is about the most boring chemical!
Iron does have a large number of oxidation states making "rust" an amazing mixture of oxides that lead to it's sometime beautiful textures.

Fe is the most common element here on earth, but most of it is at the center!

Answer 3

There are some great stories about lead. But one of the more interesting things attributed to it is the fall of the Roman Empire.

We all know that the Romans were famous engineers and builders. The aqueducts they built to bring water to various cities are still present through much of Europe. The problem arose when they were constructing the pipes.

There were numerous metals they might have chosen to make pipes from for their aqueducts, but lead is plentiful, cheap, and also sometimes makes the water taste somewhat sweeter. So they chose to make heavy use of lead pipes even though its toxicity has been known for thousands of years.

This reliance on lead-heavy water could not have been good for the Roman citizens. To make matters worse, the affluent often used lead pitchers and cups and cosmetics laden with lead too (it makes a great white pigment). So they suffered from lots and lots of gout, reduced IQ, nausea, irritability, insomnia, lethargy, vomiting, and so on.

Sure, there were other things involved too, but those blasted lead pipes certainly didn't help! Ironically, it's this used of lead that gives plumbing its current name - derived from the Latin name for lead, 'plumbium'.

Hope that helps! And when in Rome, don't drink the water! ( :

Answer 4

Pb (Lead) was used in pencils becuase it rubbed on to the paper so easily. (The "lead' in pencils are now made from graphite.)

Fe (iron). The part of your red blood cell that picks up oxygen is called hemoglobin, which has iron that binds to oxygen. That's why blood tastes a little "rusty" (Rust is iron oxide)
For more useful info check out http://www.webelements.com/

Answer 5

Fe shortened from the Latin word ferrum (iron)

Pb shortened from the Latin word plumbum (lead)

Other neat facts included in the links

Answer 6

PB is lead, FE is iron. Lead used to be called Plombium, hence Pb. FE used to be called Ferrous, hence Fe.

Answer 7

They're both metals. Isn't that interesting?