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he knew that because of the new elements that were formed and he figured that the atoms would pop back and forth and leave gaps in between them.

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Q: How did mendeleev know that there were gaps in the the periodic table?
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What did Dmitri Mendeleev arrange into a systematic chart?

the periodic table of elements In this table, elements having similar chemical properties are stacked up. The chemical properties are determined by how many free bonds an atom has open, which is related to how many electrons are in that element's outer shell.


What did Dimtri Mendeleev did not know about the periodic table?

Only some elements were discovered during the life of Mendeleev.


History of periodic table?

The history is that Dymitry Mendeleev is the inventer of long time periodic table that's all i know


Who organized the very first periodic table?

Dmirtri Mendeleev made the first periodic table. It was organized by elements according to the atomic mass. < notice it is atomic mass not number>


Was helium included in Mendeleev's original periodic table?

No, helium was not included in Mendeleev's original periodic table. It was discovered in 1868, a year after Mendeleev's table was published in 1869.


Who made the first periodic table?

Dimtrii Mendeleev made the first Periodic Table. dmitry mendeleev


What did Dmitri Mendeleev do during the Industrial Revolution?

Mendeleev laid the foundation for theperiodictable that we know today


Did mendeleev know about protrons?

No He didn't knew. Mendeleev proposed his periodic table in 1869 and he died in 1907. Protons was discovered by Rutherford after that (in 1920).


Why couldn't Mendeleev predict the existence of the noble gases in the periodic table of elements?

He could predict other elements because there was an obvious gap, but he couldn't predict the noble gases because he didn't realize that there was going to be an 18th group since none of them were yet discovered. When he first started organizing the periodic table, the pattern still made sense even without the noble gases.


Mendeleev's periodic table did not include the group we now know as noble gases What might be the reason?

They were not discovered at that time.


What contributions to science were made by Dmitri Mendeleev?

He invented the periodic table. You must know what that means; he was the father of basic chemistry. Actually, he didn't discover the periodic table. He just arranged the only elements he had available in his day (not a lot) and arranged them based on patterns of # of protons, electrons, reactivity, etc. He didn't have an in-depth knowledge yet of electron configuration ;however, his "guess" turned out to have so many great implications that we now use his invention everyday everywhere.


How did Mendeleev know where to leave the spaces in his periodic table?

mandeleev didn't know spaces in the Periodic Table because he doesn't arrange it john Kepler arrange it most of mendeleev discoveries of elements are few most of other element where discover by other scientist after him in 19th century