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Thursday, December 2, 2010

What is the periodic table?

The periodic table is an arrangement of elements in rows and columns. It is a table of elements.. At each intersection of a row and a column, one element is placed. There are a total of 118 different elements in the periodic table.

There are 7 rows and 18 vertical columns in the periodic table. The rows are called the periods in the periodic table and the columns are called the groups in the periodic table.

Elements are arranged in increasing order of their atomic numbers in the periodic table. This means that the first element has atomic number of 1 and the successive elements have atomic numbers 2, 3, 4, and so on.

The periodic table was made in order to arrange all known elements in a proper order, so that scientists worldwide can refer to it and not be confused by one anothers references. The periodic table was made in order to study the elements properties in an orderly way, and to avoid chaos in studying the properties of elements.

The periodic table helps us to remember all the elements. It classifies elements on the basis of their properties. For example, the metals are placed on the left and the middle of the periodic table, the non metals are placed on the extreme right of the periodic table, whereas the metalloids (semi-metals) are placed in the middle of the metals and the non metals in a zig-zag line in the periodic table.

So, to summarize it, the periodic table is a table of elements arranged in ascending order of their atomic numbers in rows and columns such that elements with the same chemical properties get huddled together in a group in the periodic table.
This is because the periodic table is arranged in the increasing order of the atomic number of elements, and the periodic law states that “The physical and chemical properties of elements are periodic functions of their atomic numbers”

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