Periodic Table of Elements free portable software
The periodic table or Mendeleev
table is the basis of chemistry.
The basic elements are the periodic table.
This table is often known as the original Russian inventor of that Mendeleev table.
Today’s table contains about one hundred and eighteen elements
that are arranged in the periodic table based on chemical
properties due to the regular increase in atomic number,
which is why it is also called the periodic table.
In this article, we give a brief history of the discovery and
chemical properties of the groupings in this table.
Table of contents of this post:
1. History of the Periodic Table
3. Mendeleev’s masterpiece
4. The reason for Mendeleev’s table fame
5. Origin of the current periodic table
6. What is the periodic law?
7. Periodic table structure of elements
8. Classification of elements in Mendeleev table
9. Periodic trends in the Mendeleev table
10. Define some important terms in the periodic table
History of the periodic table:
When the great Greek philosopher Aristotle proposed his theory (the four-element theory)
that all matter is made up of the four elements water, wind, earth, and fire,
it was time for the theory of elements to flourish, dating back to 3000 BC. To be.
The spark for the study of material properties began at this time.
In 1648, an alchemist named Brand Henning discovered the first element in his search for alchemy,
which was a shiny white stone. He named the element phosphorus.
Lavoisier was the first to classify dozens of elements based on their properties
and characteristics. In Lavoisier classification, elements were classified into four groups: gases,
metals, non-metals, and earth elements. Lavasier classification
can be considered as the most effective step in the work of other scientists in the field of elements.
In 1829, Johann Dobriner made an interesting discovery. When he placed the three
elements lithium, sodium, and potassium in the same group based
on similar properties, he realized that he could arrive at the properties of the intermediate
element by comparing the side elements. But John of New Zealand was the one who
categorized the elements into seven groups according to the similarity in atomic crime,
called the octave law.