This arrangement is known as the long form of the periodic table.
This law states that the properties of elements are the periodic functions of their atomic number, i.e., if the elements are arranged in tabular form in the increasing order of their atomic numbers, then the properties of the elements are repeated after definite regular intervals or periods.Ī systematic arrangement of elements into groups and periods based on similarities in chemical properties and the order of their increasing atomic number is called a modern periodic table. Henry Moseley propounded the modern periodic law.
Later, Neils Bohr gave the extended form of the periodic table, known as the long form of the periodic table. The atomic number is equal to the number of electrons or protons in a neutral atom. In \(1913\), Henry Moseley, from his studies on X-ray, found that the atomic number is the fundamental property of an element but not atomic mass. This article will learn about the Modern Periodic law, Modern periodic table chart, its features, and trends.ĬLEAR DOUBTS ON THE MODERN PERIODIC TABLE What is Modern Periodic Table? Have you ever wondered that the jewellery we wear, different types of parts used in motorcycles, the air we breathe, and the semiconductors used in computers are all made up of different elements? There are around \(118\) elements in the modern periodic table based on the study of nature around us. According to the modern periodic table, the physical and chemical properties of the elements are periodic functions of their atomic numbers. The periodic table lists all the elements known to man, arranged in order of increasing atomic number and recurrent chemical properties.
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