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Well when many things were manufactured in African countries, the trading system was not very fair, so when an Englishman realised what was going on, he did something about it. I am not completely sure what happened next but that information is definitely true
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∙ 11y ago
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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.
What did dobereiners law of triads state?
New land law
Who created the triads and what was it?
Johann Dobereiner - noticed that the atomic weight of strontium fell midway between the weights of calcium and barium, elements possessing similar chemical properties. In 1829, after discovering the halogen triad (composed of chlorine, bromine, and iodine) and the alkali metal triad of (lithium, sodium and potassium) ***he proposed that nature contained triads of elements the middle element had properties that were an average of the other two members when ordered by the atomic weight (the Law of Triads)
What resulted from the first experimental effort that established the idea of groups of elements?
The Law of triads
What Resulted from the first experimental effort that established the idea of group of elements?
The Law of triads
A proposed law in congress is called?
A proposed law in Congress is called a bill.
What is Referendum voting?
Citizens voting directly on a proposed law
What did Johann dobreiner do for the periodic table?
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 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 preceded Mendeleev and Meyer with work on the periodic table?
Newlands and Dobereiner. Newlands did the Law of Octaves. Dobereiner did the Triads.
What was the exact date of johann dobereiner's discovery?
Johann Wolfgang Döbereiner discovered the concept of the law of triads in 1817.
A proposed law?
bill
