retroose.blogg.se - Printable periodic table of elements chart

The number of protons decides which element it is and what chemical properties will it posses

Atomic number- the atomic number of an element signifies the number of protons in an atom.

Ways of reading periodic table are as follows as periodic table contains very important information and it is necessary to read it correctly The most important aspect of the periodic table made by Mendeleev was that he left space for elements which were not discovered yet but he also predicted the properties of five of these elements and their compounds. This is the time when he noticed that certain elements are appearing regularly after working continuously for three days he arranged all the elements according to their atomic weight and valence. 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 valence electron configuration and they behave in a similar manner Free Printable Periodic Tableĭimitri 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.