gridkda.blogg.se

First of all he wrote all the elements in a card according to their increasing atomic weight. Element that occupies the same column on the periodic table have same valance electron configuration and they behave in a similar manner Free Printable Periodic Table Dimitri Mendeleev was a Russian chemist and inventor who is known as the father of periodic table in the year 1868-1870 Mendeleev wrote a book on chemistry titled as principles of chemistry which was a significant find as there were no books at that time in Russia. The period number of an element represents the highest energy level that electron possess in that element in a dormant state. All elements are arranged from top to bottom and left to right according to increasing atomic numbers. The rows of the table represents period and the column represents groups. In general all elements within one row are metals on the left and all non-metals are on the right side. This arrangement represents periodic trends which show element which have same behaviour together.

The Periodic table or periodic table of elements printable is the arrangement of 118 chemical elements in a tabular form according to their atomic numbers, electron configuration and recurring chemical properties.