In Periodic table elements are organized from left to right and top to bottom in order of increasing atomic number, or the number of protons in an atom’s nucleus, which generally coincides with increasing atomic mass. The periodic table is actually a chart that organizes the elements into rows and columns. It is called “periodic” because the chemical properties of these substances repeat at regular intervals. It can be organized in different ways to make it easier to understand or find information.
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What is the Periodic table?
The periodic table is a tabular arrangement of the chemical elements, organized on the basis of their atomic numbers, electron configurations, and recurring chemical properties. Elements in the same column have similar chemical behavior.
The periodic table has been extended to include 118 elements as of 2019. These additional elements complete the seventh row (row 7) of the periodic table, and beyond that, no periodic trends are observed for elements with atomic numbers above 82.
Periodic table organized the elements in such a way that can be used to predict the properties of unknown elements. For example, if element A is in the same column as element B, they will have similar properties. If element C is in a different row from element A, it will have different properties.
The structure of the periodic table
The periodic table is a tabular display of the chemical elements, which are arranged by atomic number, electron configuration, and recurring chemical properties. In chemistry Periodic table organized the elements into groups and periods. The columns of the periodic table are called groups and the rows are called periods. The elements in each column have similar chemical properties. The elements in each row generally have different chemical properties from those in adjacent rows.
The repeating pattern of the periodic table can be explained by the electronic structure of atoms. The first two columns on the left side of the (Group 1 and 2) correspond to the s-block elements, whose valence electrons are in the s orbital. Columns 3 through 12 correspond to the d-block elements, whose valence electrons are in one of the five d orbitals. Finally, columns 13 through 18 correspond to the p-block elements, whose valence electrons are in one of the six p orbitals.
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