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it took mendleev FROM 1872 TO 1871. He figured it out in a dream that he had had whilst trying to figure out the problem
Wiki User
∙ 14y ago
Wiki User
∙ 14y agoyou could never really call the Periodic Table complete because elements are still being discovered. in its current form it has taken hundreds of years.
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What do the long dashes represent on mendeleev's periodic table?
Long dashes in the Mendellev's periodic table represent the element which were not discovered yet and these elements were discovered later on.
Who is credited with the modern periodic table?
The modern long form of periodic table was constructed by Dmitri Mendeleev (1869).
Why in the periodic table are elements 57-71 and 89-103 under the table instead of inside the table itself?
In a true periodic table, those two series would actually be inserted between Ba and Lu and between Ra and Lr. These elements have separate properties than others in the periodic table, and adding them directly in their place (instead of just separating them) would disrupt the classical group numbering system, make the periodic table ridiculously long, and just plain make it even harder to understand.
What is the group of the periodic table?
Groups are the vertical columns on the periodic table. There are 18 groups on the periodic table.Group 1 = Alkali MetalsGroup 2 = Alkaline Earth MetalsGroups 3-12 = Transition MetalsGroup 17 = HalogensGroup 18 = Noble gasesthe table is used in chemistry to list in order like elements----long time since general chemistry
What is the meaning of periodic table?
periodic means time for chuncks of time. It means that in the Periodic Table the elements are organized by when they were found, the mass number, the abreviation, the state of matter, etc.
Who assembled the periodic table?
The modern long form of periodic table was constructed by Neils Bohr based on modern periodic law proposed by Moseley.
Why long form of periodic table is superior than Mendeleev periodic table?
The long form of periodic table has the advantage to present all chemical elements in order of the atomic number; but this form is not usual because is not adequate for printing.
Which version of the periodic table do you use now?
The modern long form version of the periodic table is now accepted by the IUPAC.
History of periodic table?
The history is that Dymitry Mendeleev is the inventer of long time periodic table that's all i know
What do the long dashes represent on mendeleev's periodic table?
Long dashes in the Mendellev's periodic table represent the element which were not discovered yet and these elements were discovered later on.
Who is credited with the modern periodic table?
The modern long form of periodic table was constructed by Dmitri Mendeleev (1869).
How many protons and neutrons are in sodium based on periodic table?
There are 11 protons and 12 neutrons. And that does not depend on the periodic table. Sodium had 11 protons and 12 neutrons long before the periodic table, or even human, beings existed!
How long did it take to create the periodic table?
it toke 2 years
What are some ways that elements are arranged on the periodic table of elements?
Mendeleev arranged the elements in a table in the increasing order of atomic masses and repeating periodic properties. In the modern long-form of periodic table, the elements are arranged in the increasing order of atomic number and repeating periodic properties.
What month was the periodic table created in?
August 20, 1864 was when John Alexander Reina Newlands produced the first periodic table of the elements.
What is the abbreation of He on the periodic table?
He is the chemical symbol for Helium. In the periodic table we use the chemical symbols to identify elements easily because some elements have rather long names.
What property of element is used to classify them in Long form of periodic table?
This is the number of protons.
