because the properties of known elements
Because those elements were not known at the time of Dmitri Mendeleev.
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.
The periodic table of elements was created by Dmitri Mendeleev, a Russian chemist, in 1869. He arranged the elements based on their atomic mass and properties, and left gaps for elements that were yet to be discovered. Over time, new elements were discovered and added to the periodic table by various scientists.
Scientists suggest Mendeleev left gaps in the periodic table because Mendeleev knew the elements existed; however, was unable to prove it.
There is no specific reason mentioned for why Dmitri Mendeleev left blank spaces on the periodic table. It is believed that he left these spaces to accommodate elements that were yet to be discovered or to demonstrate the existence of elements with certain properties that were predicted but not yet confirmed. These blank spaces eventually led to the discovery of new elements and validated Mendeleev's periodic table.
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
Because those elements were not known at the time of Dmitri Mendeleev.
Gg
K
Tessellation: to form or arrange patterns of shapes in a layout that leaves no gaps or overlays. So basically, its a series of shapes that are put together leaving no gaps or any overlaps. for example, lots of squares put together would leave no gaps but a circle wouldn't work because if you put them together they leave gaps.
Dmitri was the guy's first name. He was actually Mendeleev. Basically, he noticed that some elements happened to have similar properties to some other elements and that these elements could be arranged in a logical way in a table. OK, so there were gaps, but as time passed these gaps (which really were predictions that there were as-yet undiscovered elements) became filled.
Professor Dmitri Mendeleev published the first Periodic Table of chemical elements in 1869 based on properties which appeared with regularity. He noted gaps in the table, and predicted that as-of-yet unknown elements existed with properties appropriate to fill those gaps.
Professor Dmitri Mendeleev published the first periodic table of chemical elements in 1869 based on properties which appeared with regularity. He noted gaps in the table, and predicted that as-of-yet unknown elements existed with properties appropriate to fill those gaps.
Dmitri Mendeleev is generally credited, as he was able to predict the properties of elements which had not yet been discovered based on 'gaps' in his table. He ordered the known elements in terms of their atomic mass in 1869; elements are listed in order of increasing atomic number in the modern version.
I believed you are referring to Dmitri Mendeleev. He left blank space because he was able to deduce a pattern between the chemical properties of the elements an their atomic weights. He also noticed gaps in this pattern and hypothesized correctly that these blank spots corresponded to elements that had not yet been discovered.
it means they leave small gaps between themselves and the trees arouns them
To create a sense of ambiguity