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How did mendeleev find the undiscovered elements of the periodic table?
Wiki User
∙ 15y ago
Mendeleev managed to predict undiscovered elements by comparing two different elements Atomic Mass, that had a gap between them, and averaging there atomic mass for example: Mn _ Co if you dont know what the middle element is then by looking at the the atomic mass of Mn and Co you can work out roughly what its atomic mass is. Mn=55 and Co=59 so by adding them together and dividing by 2 you get 57 however Fe is in fact 56 but as you can see it was very close and this was how he would work out the atomic mass. He would also compare the properties of elements with similar atomic mass for example the alkaline metals such as lithium and sodium will react in the same way by doing this he could work out what a missing element would look, feel, react like etc.
Wiki User
∙ 12y ago
Wiki User
∙ 15y agoHe didn't actually 'find' them. When he sorted the known elements by weight, and then grouped them by 'families' there were gaps, and he (correctly) guessed that there were elements which had yet to be discovered.
Wiki User
∙ 6y agoWhen Mendeleev arranged the elements there were number of elements having different properties than their respective groups in which they will be placed if arranged on the basis of their atomic masses. In this way he came to know that there may either be the elements of respective properties which are not discovered yet.
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What is the greatest triumph about mendeleev's periodic table?
The greatest triumph of Mendeleev's periodic table was his predictions of the existence of the undiscovered elements.
What are the two factors that led to widespread acceptance of Mendeleev's periodic table?
Mendeleev table allow predictions on the elements undiscovered at the time.
Is it true or false that Mendeleev and other scientists were able to use the periodic table to predict the properties of undiscovered elements?
yes it is true. that is how the periodic table was established. ----
What is Dmitri Mendeleev most known for?
Dmitri Mendeleev was a Russian inventor and chemist. He is perhaps best known for his version of the periodic table. This helped him predict properties of elements which had not yet been discovered at that time.
What was Dmitri Mendeleev first periodic table called?
Dmitri Mendeleev first periodic table is called Mendeleev's periodic table. Elements are arranged according to atomic mass.
What is the greatest triumph about mendeleev's periodic table?
The greatest triumph of Mendeleev's periodic table was his predictions of the existence of the undiscovered elements.
What Is The Correct In Which Organisms Appear In The Fossil Record from earliest to most recent?
mendeleev creates a Periodic Table mendeleev predicts undiscovered elements moseley arranges the periodic table by atomic number a periodic table is created by mendeleev mendeleev predicts undiscovered elements the periodic table is arranged by atomic number by a man named moseley
The usefulness of Mendeleev's periodic table was comfirmed by?
The usefulness of Mendeleev's periodic table was confirmed by the discovery of elements with predicted properties.
What are the two factors that led to widespread acceptance of Mendeleev's periodic table?
Mendeleev table allow predictions on the elements undiscovered at the time.
What is the probable sequence in which the following clades of animals originated from earliest to most recent?
mendeleev creates a periodic table mendeleev predicts undiscovered elements moseley arranges the periodic table by atomic number a periodic table is created by mendeleev mendeleev predicts undiscovered elements the periodic table is arranged by atomic number by a man named moseley
Who created the first version of the modern periodic table of elements and used it to predict undiscovered elements?
Dmitri Mendeleev
Why did mendeleev leave gaps in the table?
Scientists suggest Mendeleev left gaps in the periodic table because Mendeleev knew the elements existed; however, was unable to prove it.
Is it true or false that Mendeleev and other scientists were able to use the periodic table to predict the properties of undiscovered elements?
yes it is true. that is how the periodic table was established. ----
What is the name of the table of elements?
A Periodic table The Periodic Table of the Elements.
How did mendeleev explain blank spaces left in his periodic table?
On his Periodic Table Mendeleev left the blank spaces, because he thought there would be elements that would follow his pattern.
Which elements did Mendeleev leave space for in his first periodic table?
Mendeleev left spaces for undiscovered elements. He named them eka-aluminium, eka-silicon etc.
What did Mendeleev predict about the periodic table?
The gaps in the first periodic elements described those elements which were not discovered at that time. Eg-silicon,germanium etc
