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Answered 2014-08-26 21:05:47
Three sets of elements added to the periodic table after Mendeleev's time were lanthanides, noble gases and actinides. Three elements, flerovium, livermorium and ununseptium were added after Mendeleev's time.
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What are the elements whose discovery added an entirely new row to Mendeleevs periodic table?
The elements are lanthanoids and actinoids.
What did Mendeleevs periodic table look like?
it is the present periodic table. it contains 108 elements.
How many elements are in mendeleevs periodic table?
There are currently 118 elements in the periodic table. *Since 23rd October 2008.
Mendeleevs periodic table of elements was created in 1901?
Mendeleev's periodic table of elements certainly wasn't created in 1901
Name three sets of elements that have been added to the periodic table after mendeleevs time?
noble gases, lanthanides, and actinides.
Which group of elements was missing from Mendeleevs table?
Group 0 elements, the noble gases.
How was mendeleevs scheme for listing elements different from modern periodic table?
Modern periodic table is arranged according to the atomic numbers of elements and Mendeleev's periodic table was arranged according to the atomic masses of elements.
Main idea of mendeleevs first periodic table?
In Mendeleev's periodic table, the elements were arranged in the increasing order of their atomic masses and repeating periodic properties.
What changes were made to the periodic table after Dmitri mendeleevs discovery?
they changed the 3 new Elements.
What are the diffrencies between the modern periodic table and mendeleevs periodic table?
In Mendeleev's periodic table, the elements were arranged according to increasing atomic mass and repeating periodic properties. In modern periodic table, the elements were arranged according to increasing atomic number and repeating periodic properties.
What were mendeleevs discoveries and predictions and discoveries abot the periodic table?
Mendeleev predicted that properties of elements are periodic function of atomic mass. He demonstrated it by creating a table.
Why is the mendeleevs table called the periodic table?
Because the properties of the elements change in a periodic fashion. In the early versions, when fewer elements were known, the chemically similar elements were thought to occur every eight positions.
How does mendeleevs periodic table differ from moselys periodic table?
Mendeleev arranged the elements are arranged in order of increasing atomic mass.Moseley arranged the elements are arranged in order of increasing atomic number.
How does the modern day periodic table differ from Mendeleevs 1860s periodic table?
Elements in the modern periodic table are arranged by atomic number wheras Mendeleev didn't know anything about the atomic structure of the atom.
Why is mendeleevs periodic table considered a viable scientific model?
it could be used to explain the behavior of all of the elements.
What does mendeleevs first periodic table look like?
Mendeleev arranged elements in rows and columns. He arranged elements according to atomic mass.
What showed how useful Mendeleevs periodic table was?
Mendeleev's table comprised of elements having same properties together. It made study of elements easier, however it had certain drawbacks.
What effect did the discovery of gallium scandium and germanium have on the acceptance of the mendeleevs table?
The disovery confirmed Mendeleev's theory and the basic framework for the Periodic Table of Elements. :)
Why did mendeleevs periodic table not have noble gases?
Noble gases were not discovered when Mendeleev proposed his periodic table
Why is there a space in the lower periods on the periodic table?
they are artificially made elements added to the periodic table
What is the last group of elements added to the periodic table?
unknown elements
Mendeleevs periodic table and the 18th group?
The 18th group doesn't exist in the first periodic table of Mendeleev.
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