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Dobereiner classified elements into groups of three. He introduced law of triads according to this law every element which comes in the middle of such a group has Atomic Mass equal to average of the atomic masses of first and third element.
for example
Lithium(Li) 7
Sodium(Na) 21
Potassium(K) 39
What else can I help you with?
What year was the periodic table published in?
The first slightly inaccurate Periodic Table of Elements was invented in the mid 1800's. Then Henry Mosley found the mistakes and re-corrected them in the early 1900's, which now is our current periodic table that we use.
Does h stand for helium on the periodic table?
No, the symbol "H" stands for Hydrogen on the periodic table. The symbol "He" stands for Helium on the periodic table.
What is the abbreviation for potassium in the periodic table?
The abbreviation for potassium is " K " in the periodic table. It is placed in group-1 of the periodic table.
What are the names for a pereodic table?
These names are the names of chemical elements.
What is the abbreviation for silicon on the periodic table?
Si is the abbreviation for silicon on the periodic table.
Who invented the ciggarette lighter?
Johann Wolfgang Dobreiner in 1823.
What did Johann Dobereiner do to try and sort out the elements on the periodic table?
Because he was a good scientist
Where did Johann Wolfgang discover the periodic table of elements?
Dmitri Mendeleev is credited with creating the first periodic table of elements in 1869 after noticing a recurring pattern of properties when arranging elements by atomic mass. Johann Wolfgang had no direct involvement in the discovery of the periodic table.
Who organized the first useful periodic table in the early 1800s?
Johann Wolfgang Döbereiner, the German chemist.
What did Johann Arfwedson discover?
One of the things he discovered was LITHUIM. It is on the periodic table as Li. Your Welcome, _Unknown_ :)
How was the periodic table found?
the periodic table was was not found it was created by a few scientists names, Johann Dobereiner, Alexandre Beguyer de Chancourtois, Dimitri Mendeleev,Lord Rayleigh, William Ramsey, and Henry Moseley.
Who began doing the periodic table in the 1800?
The name of the person working on periodic table in exactly 1800 is unknown. However the persons around that time were Antoine-Laurent de Lavoisier in 1789 and Johann Wolfgang Döbereiner in 1817
What is the name of the table of elements?
It is named The PERIODIC TABLE. The periods being the horizontal rows The groups being the vertical columns.
What did Johannes dobereiner contribute to the atom?
Johann Döbereiner discovered patterns in atomic masses that foreshadowed the periodic table. Please see the link.
What is a group in a periodic table.?
A group in Periodic Table is the column of element in periodic table
Contribution of Johann Dobereiner for the periodic table?
An organized tabular arrangement of chemical elements on the basis of their electron configurations, atomic number and recurring chemical properties is the periodic table of elements. Johann Wolfgang Dobereiner has a great contribution in periodic table of elements because he foreshadowed the periodic law for the chemical elements.
What is a chart that lists all the known elements?
It is called the Periodic Table of Elements.
