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For more info visit http://jeemains2018.in Properties of elements are the periodic function to their atomic numbers. The periodicity in properties is due to repetition of similar outer shell electronic configuration at a certain regular intervals. In modern periodic table is based on modern periodic law in which elements are arranged in increasing order of their atomic numbers. In the modern periodic table, the elements are arranged in rows and columns. These rows and columns are known as periods and groups respectively. The tab