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It was recognized by the inventor of the Periodic Table that these empty spaces are for elements/isotopes that would be discovered someday. Dmitri Mendeleev is generally credited with the publication, in 1869, of the first widely recognized periodic table. He developed his table to illustrate periodic trends in the properties of the then-known elements. Mendeleev also predicted some properties of then-unknown elements that would be expected to fill gaps in this table.
What else can I help you with?
What period in the periodic table is copper?
Copper is located in period 4 of the periodic table.
Is there a element ef?
If you meant "element" as in a chemical element, there is no element with the symbol "ef" in the periodic table.
Which is the layer under ground where all empty spaces are filled with water?
The layer underground where all empty spaces are filled with water is called the saturated zone or the phreatic zone. This zone is located below the water table, which is the upper boundary of the saturated zone where water pressure is equal to atmospheric pressure. Groundwater is stored in the saturated zone and is a vital source of drinking water for many communities.
Which is the layer underground all empty spaces are filled with a combination of air and water?
Zone of saturation
Which is the layer underground were all empty spaces are filled with a combination of air and water?
The layer underground where all empty spaces are filled with a combination of air and water is called the vadose zone or the unsaturated zone. This zone is located above the water table and allows movement of both air and water through it.
Who left spaces in the periodic table and why?
Dmitri Mendeleev left gaps in the periodic table to account for elements that had not been discovered yet. He predicted the properties of these missing elements based on the patterns he observed among known elements. This led to the successful discovery of new elements that filled in the empty spaces, validating his periodic table.
How many blank spaces were in mendeleeves periodic table?
There were 3 blank spaces in mendeleev's Periodic Table. He left it for the elements which were not discovered at that time.
Why did Mendeleev leave three spaces on the periodic table?
Because those elements were not known when he formulated his periodic table.
How did mendeleev explain blank spaces left in his periodic table?
Mendeleev explained the blank spaces in his periodic table by predicting the existence and properties of elements that had not yet been discovered. He organized the known elements based on their atomic weight and properties, which allowed him to accurately predict the properties of missing elements. These predictions helped guide the discovery of new elements that filled in the empty spaces in the table.
What is meant by 'a group' on the periodic table?
A group is vertical column. There are 18 groups in periodic table.
What eventually happened to the gaps left in the periodic table left by Mendeleev?
The gaps in the periodic table left by Mendeleev were eventually filled in as new elements were discovered. Scientists continued to study and experiment, leading to the discovery and verification of elements that fit into the empty spaces in the periodic table.
Why did mendeleev leave blank spaces on his periodic table?
Mendeleev left blank spaces because certain elements on the Periodic Table were not known at that time. He knew that in the future, those elements would be found and placed on the periodic table.
Why did Dmitri Mendeleev leave spaces in the periodic table?
Because
What did mendeleev mean by periodicity of properties?
what he meant by it was it meant the same as periodic table.
What is meant by the Periodic Table?
A table in which properties of elements are repeated after some interval.
Why did Dmitri Mendeleev leave some squares in his table blank?
Mendeleev left blank spaces in his periodic table to account for elements that had not yet been discovered. He predicted the properties of these missing elements based on the patterns he observed in the table. This empty spaces allowed for the periodic table to be a predictive tool for the discovery of new elements.
What are the horizontal collum called in the periodic table?
There seems to be a typo in your question. If you meant a "horizontal row" (left to right) of the periodic table, those are called periods. If you meant a "vertical column" (up and down) of the periodic table, those are called groups.
