Please help. My chemistry teacher Mrs Clarke has told me and my friend
to research and do a poster on the scientist Dobereiner.
We have searched everywhere and don't have much time left. It would be
wonderful if you could send me some info or tell me where i could find
There are a number of places on the internet who have some information on
him. As always with the 'net, check their sources before believing them.
Here is a brief description from one sight that can get you started:
Dbereiner, Johann (1780-1849)
German chemist who developed the Law of Triads in 1829 in an early attempt
to classify the chemical elements. This law organized elements in groups of
of three having similar properties (such as chlorine, bromine, and iodine)
and stated that the average mass of the first and third equaled the mass of
the second. This law is approximately true for several groups of elements.
Dbereiner's classification scheme was improved and perfected by Mendelev.
Look up anything on the history of the periodic table and you should find
out a little more.
Also, check out the encyclopedias in your library, you should find out a
Also, if you have access to the internet, go to www.msn.com and try a
search, with Dobereiner Johann, and you should pull up a number of sights,
some of which are quite good, one is:
We do not want to see you overstressed, do we?
Anyway, here is a start.
Johann Dbereiner (Doebereiner), German chemist (I think he was born in
what is Poland now) is known for his contribution to the development of the
periodic table of chemical elements. In about 1829 he reported his law of
Triads. This law essentially says that chemical elements can be grouped in
sets of three where the properties of the middle element could be inferred
from the lighter and heavier one. This tabular system was later improved
to it present form by the Russian scientist Mendelev. Dbereiner is also
known for a developing a table lighter that used hydrogen gas to produce a
flame. Hydrogen, as you know, is explosive and his lighters were not safe!!
If you need his list of his tirads, look at the following web site.
For more information, please go to a good library and look for an
encyclopedia of chemistry, or books of history of chemistry or books on the
development of the periodic table.
Best of luck
Dr. Ali Khounsary
Advanced Photon Source
These are a bit sketchy but hope they are a little help.
I found these two sites on the web using webcrawler search engine. I
recommend looking at them to give you an idea on where to investigate
further. After you get a better idea, go to your local public library and
look more into encyclopedias and chemistry reference books.
good luck on that report.
A quick web search turned up three scientists named "Dobereiner," and two
of themn actually had some information about them. The third was just
mentioned as one author of a research paper in astronomy. The other two
are a scientist in Brazil who works at developing environmentally friendly
and the other was a pioneer in the development of the periodic law of the
Richard Barrans Jr., Ph.D.
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Update: June 2012