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The electrical configuration of the elements provides the basis for the contemporary periodic table. The electrons in an element’s outermost or valence shell play a big role in determining its properties. Inner shell electrons have limited influence on the characteristics of elements, while valence electrons interact with other atoms and participate in all chemical reactions. The elements with the same number of valence shell electrons are repeated in such a way that they come under the same group when placed in order of increasing atomic number. Because the valence shell electrons have the same electrical arrangement, they have identical properties.
Features of Modern Periodic Table
In the modern periodic table, there are eighteen vertical columns, known as groups, that are organised from left to right, and seven horizontal rows, known as periods.
Group number | Group name | Property |
Group 1 or l A | Alkali metal s | They form strong alkali with water |
Group 2 or ll A | Alkaline earth metal | They also form alkaline but weaker from group 1 A |
Group 13 or lll A | Boron family | This family’s first member is Boron. |
Group 14 or lV A | Carbon family | This property’s first member is carbon. |
Group 15 or 5A | Nitrogen family | This group has non metal and metalloids |
Group 16 or VI A | Oxygen family | The are also known as chalcogens |
Group 17 or VII A | Halogen family | The elements of this group from salts |
Group 18 | Zero group | They are Noble gas and under normal conditions they are inert |
The contemporary periodic table is crucial in the study of chemistry.
The following are some of the most important characteristics of the contemporary periodic table.
The elements are arranged in ascending order by their atomic numbers
Periods are seven horizontal rows and groups are eighteen vertical columns
Because they all have the same number of outer electrons, elements in a group have comparable physical and chemical properties
However, when we proceed from top to bottom in a group, they show a steady change
When compared to the 63 elements in Mendeleev’s periodic table, the current periodic table has more elements. It currently has 118 elements.
Without the existence of the present periodic table, it is fair to conclude that studying the chemistry of elements would have been impossible. The contemporary periodic table’s classification of elements aids in the better understanding of element properties.
The main features of modern periodic table
The long form of the periodic table has vertical columns referred to as groups and horizontal rows referred to as periods.
The atomic numbers of the elements are ordered in ascending order.
The contemporary periodic table divides elements into seven periods and 18 groupings.
Periods and groups are the terms for horizontal rows and vertical columns, respectively.
Periods are assigned to elements based on the number of shells present in their atoms.
The first phase, which comprises only two elements — hydrogen and helium – is the shortest.
The elements of the second phase range from Lithium to Neon.
The elements in the third period range from Sodium to Argon.
The elements in the fourth period range from potassium to krypton.
Elements in the fifth period range from Rubidium to Xenon.
In the periodic table, the sixth period is considered the longest. It contains a variety of elements ranging from Cesium to Radon.
The seventh period is an unfinished period.
Lanthanides are found in the sixth period’s group IIIB.
Actinides are found in group IIIB of the seventh periodic table.
Lanthanides and Actinides are at the bottom of the periodic table.
Conclusion
We can conclude that the Periodic Table is the most important achievement in the world.We have The Periodic Table because of the work of Demitri Mendeleev and others.
It’s full of patterns that help us understand the world around us better. We wouldn’t have many of the items and medicines we have today if it weren’t for it.The periodic table can provide access to a wealth of information about the entire universe in which we exist.The purpose of the article is to give you some knowledge about the Modern periodic table.
