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After Mendeleev all natural elements were predicted.
Mendeleev realized that some elements had not been discovered.
Only some elements were discovered during the life of Mendeleev.
He realized that some elements had not been discovered.
the large gaps
After Mendeleev all natural elements were predicted.
Mendeleev realized that some elements had not been discovered.
Only some elements were discovered during the life of Mendeleev.
Mendeleev left some gaps in his table for the elements which were not discovered at that time.Those elements were later found as silicon,gallium,germanium which were then filled in the gaps
some guy called Mendeleev
the large gaps
He realized that some elements had not been discovered.
the large gaps
When making his periodic table Mendeleev noticed some spaces where elements should be couldn't be filled. He didn't want to force elements that didn't belong there to go there, so he believed the spaces were undiscovered elements. He left the names blank but predicted their properties. Later the elements Mendeleev predicted existed were discovered.
Yes, Dimitri Mendeleev did (accurately, I might add) predict where elements would appear in his table. He also correctly predicted some of the missing elements' properties, based on where they were positioned in his table.
He is credited as being the creator of the first version of the periodic table of elements. Using the table, he predicted the properties of elements yet to be discovered.
Because some of the elements were not yet discovered so he left them blank for other elements to be discovered. -bobby corner