Who discovered chemistry first
- •
Mendeleev Periodic Table
Mendeleev’s Periodic Table was the first bold attempt to arrange all the known elements in a proper manner. This table was based on the principle of Mendeleev’s Periodic Law and was a significant step made in the direction of arranging all the known elements.
According to Mendeleev, the characteristics of elements are a periodic function of their atomic masses and thus he arranged all the known elements of that time in increasing order of their atomic mass in the form of a table called Mendeleev’s Periodic Table.
Let’s learn more about Mendeleev’s Periodic Law and his periodic table in detail in this article.
What is Mendeleev’s Periodic Law?
People from the very start tried to arrange known elements in a proper manner to study their properties in a more effective manner. Various people have come up with various ideas to arrange the elements such as the New Land law of Octaves, Dobereiners Triads, etc. But the most significant step in this direction was made by the famous Russian scientist Dmitri I. Mendeleev in 1869. He based
- •
Periodic table
Tabular arrangement of the chemical elements ordered by atomic number
This article is about the table used in chemistry and physics. For other uses, see Periodic table (disambiguation).
The periodic table, also known as the periodic table of the elements, is an ordered arrangement of the chemical elements into rows ("periods") and columns ("groups"). It is an icon of chemistry and is widely used in physics and other sciences. It is a depiction of the periodic law, which states that when the elements are arranged in order of their atomic numbers an approximate recurrence of their properties is evident. The table is divided into four roughly rectangular areas called blocks. Elements in the same group tend to show similar chemical characteristics.
Vertical, horizontal and diagonal trends characterize the periodic table. Metallic character increases going down a group and from right to left across a period. Nonmetallic character increases going from the bottom left of the periodic table to the top right.
The first periodic table to become generally accept
- •
Copyright ©spyalley.pages.dev 2025