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What are the two city-state-country triads on the periodic table of elemnents?
Wiki User
∙ 11y ago
americium - America
berkelium - city of Berkeley, California, home of the University of California
californium - state of California and University of California, Berkeley
• germanium - Germany
• hassium - Hesse, Germany
• darmstadtium - Darmstadt, Germany
Wiki User
∙ 11y ago
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What periodic trends did Mendeleev organize his periodic table by?
atomic mass, triads, and octaves
What was the problem with Dobereiner's periodic table?
Dobereiner is remembered for what were called "Dobereiner's Triads" which are groups of three elements having similar chemical properties. This is a forerunner of the periodic table, but it is not actually a table, and it does not offer any explanation for the chemical similarities observed within the triads. Mendeleev's Periodic Table of the Elements shows the relationship of every element to every other element, and explains why they all have the chemical properties that they have.
What is the contribution of Dobereiner to the periodic table?
He provided the base for the classification of elements he says the elements are atomic masses nearly same he arranged the atomic masses of the middle element is approximately the arithmetic mean of other two elements,He first gave us the ''Law of Triads''...where he made lists of three elements each, and showed that the mass of the middle element is approximately equal to the average mass of the other two elements.
Who was Dobereiner?
johann dobereiner had contributed towards the base of the periodic table and discovered that the elements shared similiar properties because there always was three elementzs in three groups that he later refered to as Triads.
In the periodic table what is a period?
A period on the periodic table is a row.This is the horizontal section of the periodic table.
What periodic trends did did Mendeleev organize his periodic table by?
Atomic Mass Octaves and Triads
What periodic trends did Mendeleev organize his periodic table by?
atomic mass, triads, and octaves
What was the problem with Dobereiner's periodic table?
Dobereiner is remembered for what were called "Dobereiner's Triads" which are groups of three elements having similar chemical properties. This is a forerunner of the periodic table, but it is not actually a table, and it does not offer any explanation for the chemical similarities observed within the triads. Mendeleev's Periodic Table of the Elements shows the relationship of every element to every other element, and explains why they all have the chemical properties that they have.
Who preceded Mendeleev and Meyer with work on the periodic table?
Newlands and Dobereiner. Newlands did the Law of Octaves. Dobereiner did the Triads.
What limitation of Johann Dobereiner in periodic table?
Dobereiner gave triads for few elements. It could not be applied to other elements.So it was not considered further.
Which of the Dobereiner triads shown are still listed in the same column of the modern periodic table?
These triads are: Li-Na-K, Ca-Sr-Ba, Cl-Br-I, S-Se-Te.
How was Döbereiner's concept of triads an important step in the developement of the periodic table?
Döbereiner (working after 1815) was the first which found some rules for the rational arrangement of chemical elements. He proposed in 1829 the law of triads - only five triads were discovered.
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 the name of the table of elements?
A Periodic table The Periodic Table of the Elements.
How are the elements arranged?
atomic number
What is the contribution of Dobereiner to the periodic table?
He provided the base for the classification of elements he says the elements are atomic masses nearly same he arranged the atomic masses of the middle element is approximately the arithmetic mean of other two elements,He first gave us the ''Law of Triads''...where he made lists of three elements each, and showed that the mass of the middle element is approximately equal to the average mass of the other two elements.
What periodic trends did Mendeleev organize his periodic table by Atomic number Atomic mass Octaves Triads First ionization energy?
In 1869, Mendeleev organized his periodic table by increasing atomic mass (atomic weight), using what is called the "law of octaves," by which every 8th element in the sequence shared similar properties. This was first observed by John Newlands in his element table around 1863.
