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Explain me the period classification of elements
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The first period contains the least elements than any other, with only two, hydrogen and helium. ... However, in terms of its nuclear structure it belongs to the s block, and is therefore sometimes classified as a group 2 element, or simultaneously both 2 and 18.
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MARK ME BRAINLIST
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According to the modern periodic classification, the properties of elements are the periodic function of their atomic numbers. ... In this table, the elements are arranged in rows and columns. These rows are called 'periods' and the columns are known as 'groups'. The table is made up of 7 periods and 18 groups.
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