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Mendeleev's Periodic Table contained 63 elements because it was based on the elements known at the time, which were primarily discovered in the 19th century. Mendeleev organized these elements by increasing Atomic Mass and grouped them according to similar chemical properties. His table was groundbreaking, but many elements that exist today had not yet been discovered or isolated when he published his work in 1869. Additionally, the understanding of atomic structure and the periodic law evolved over time, leading to the discovery of new elements and the eventual expansion of the periodic table.
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What does mendeleevs first periodic table look like?
The first periodic table was a handwritten table by Mendeleev. It had groups horizontally across the top and periods down the left hand side. The elements were all put into certain groups with only their chemicals symbols and atomic numbers depicted.
Is sun light in the periodic table?
Periodic table contain only chemical elements.
What compound is NaI on the periodic table?
Periodic table contain only chemical elements not compounds.
What is a compound in a periodic table?
182 I don't think there are compounds in the periodic table. As far as I know the periodic table contains only elements, compounds are formed by ionic/covalent bonding which is another story already. http://www.webelements.com/
What is H2S on the periodic table?
You will not find H2S on the periodic table. The periodic table contains only elements, and H2S is a compound, made of two elements, hydrogen (H) and sulfur (S).
How many laws are there in the periodic table of elements?
The periodic table of elements does not contain laws, only elements.
What does mendeleevs first periodic table look like?
The first periodic table was a handwritten table by Mendeleev. It had groups horizontally across the top and periods down the left hand side. The elements were all put into certain groups with only their chemicals symbols and atomic numbers depicted.
What are chemical compounds on the periodic table?
There are no compounds on the periodic table. The periodic table only lists elements.
What is oil on the periodic table of elements?
Only elements are in the periodic table (about 100) but oil is not an element, it is a substance.
Examples of acids of periodic table?
There are no acids on the periodic table, Only elements.
Where is an element found on the periodic table?
Everywhere. The periodic table only has elements
What group is co3 in the periodic table?
CO3 is not placed in periodic table. Only elements are arranged in periodic table.
How many liquid are found in a periodic table?
Only 2 elements of the 126 elements in the periodic table are liquid.
What is the only English letter not found on the periodic table of elements?
The letter "J" is the only English letter not found on the periodic table of elements.
Is sun light in the periodic table?
Periodic table contain only chemical elements.
Why isn't water a nonmetal on the periodic table?
Water isn't on the periodic table as it is a compound and only elements are on the periodic table
Are only the most important elements included in the periodic table?
no. all elements discovered (and proposed) are included in the periodic table
