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Mendeleev found that he could arrange the 65 elements that were then known, in a grid or table so that each element had a higher atomic weight than the one on its left and similar chemical properties to other elements in the same column. In his table he noted gaps - spaces where elements should be but none had yet been discovered In fact just as Adams and LeVerrier could be said to have discovered the plant Neptune on paper, Mendeleev could be said to have discovered silicon, because he observed a gap between silicon and tin, aluminum and boron, on paper, for he predicted their existence and their properties before their actual discoveries.
Wiki User
∙ 14y ago
Wiki User
∙ 9y agoFacts:
The rows arrange the elements in groups that have similar characteristics.
You can find the molecular mass of compounds using the periodic table.
J is the only letter that doesn't appear in any name of periodic table element (q appears in ununquadium)
Fib: The Periodic Table of elements wasn't completely invented by Dimitry Mendeleyev; there were many contributors, and he just wanted to have some credit as a professor after he wasn't recognized somewhere else
Wiki User
∙ 9y agoThere are hundreds of questions you could ask about the periodic table. You could ask why it is important for example.
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Where are transition metals located on the periodic table?
The transition metals are located in groups 3 - 12 on the Periodic Table.
Where is period 3 located on periodic table?
Period 3 is the 3rd horizontal row. It is the 3rd row in periodic table.
What are facts about Cadmium?
1. It is a toxic element on the periodic table 2. It is mined and refined in the U.S.A 3. It is used in objects in your house such as batterys
How many electrons do period 3 in periodic table have?
period 3 elements in the periodic table have 3 electrons in there outher shell hence the name.
Region of the periodic table where most radioactive elements are found?
Group 3 of the periodic table contains many of the radioactive elements.
Where are transition metals located on the periodic table?
The transition metals are located in groups 3 - 12 on the Periodic Table.
Where are transition metals located in the periodic table?
Transition metals are located in group 3-12 of the periodic table. The middle of the periodic table.
Where is period 3 located on periodic table?
Period 3 is the 3rd horizontal row. It is the 3rd row in periodic table.
What are facts about Cadmium?
1. It is a toxic element on the periodic table 2. It is mined and refined in the U.S.A 3. It is used in objects in your house such as batterys
What are the groups 3-12 classified as in the periodic table?
The elements in group 3-12 are transition elements. They are placed in centre of periodic table.
How many electrons do period 3 in periodic table have?
period 3 elements in the periodic table have 3 electrons in there outher shell hence the name.
Where are the 3 regions of the periodic table located?
The periodic table comprises of metals (on the left) ,non-metals(on the right ) and transition elements (between metals and non-metals) in the periodic table.
What category of elements is the most common in the periodic table where is that category found in the periodic table?
The transition metals are the most common, and are found in the middle (groups 3-12) of the Periodic Table.
Region of the periodic table where most radioactive elements are found?
Group 3 of the periodic table contains many of the radioactive elements.
What are the group and period number of sodium in the periodic table?
Sodium, Na, is in group 1 period 3 on the periodic table.
What is element No 3 on the periodic table?
Nitrate 3
The what are located in the center of the periodic table?
The transition metals are found toward the middle of the periodic table.
