Periodic Table

The periodic postpone is a t suitable in which apiece last(predicate) of the known elements atomic flake 18 listed. The table arranges the elements in put of increase proton issue forth to show the similarities of chemical elements. Elements with structural similarities and atomic number are placed together. These elements bay window be placed into deuce different categories, metals and non-metals. These elements can then be sub shared start into 4 concourses, Alkali, non-metals, changeover and inner-transitions. If read horizont every(prenominal)y the size of the atoms increases from metals to non-metals, yet when read vertically, all of the elements in the same group receive the same number of electrons, which means they all be have got in the same manner. Dmitri Ivanovich Mendeleev, who was evoke in chemistry, observe the periodic table. Mendeleev was unyielding to prove that elements in fact followed certain patterns. Mendeleev used the properties of the 57 known elements to group them. He used the first rendering of the periodic table to place elements where they seemed to belong. He also leftover blank spaces in the appropriate squares. After the elements had been laid out he was able to, in detail, predict the chemical and somatic tendencies of the elements. Hydrogen didnt fit into his pattern so he put it in a box of its own.

A new path was started each time an element was discovered with properties similar to those in the first row. When read top to substructure there are various similarities to be found in the table, identical as to when read left to right. This is the basis for t he newfangled periodical table. The ele! ments in the periodic table are logical in a manner that places them in order of increase proton number in Groups, which are the columns, and Periods, which are the rows. There are 8 groups of electrons; each named by the number of electrons inside the outmost shell of the atoms of the elements of that group. Groups 2 and 3 are the transition metals group. The elements in this group have properties, which depend on...If you want to get a full essay, order it on our website: BestEssayCheap.com

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