The Periodic Table of Elements

In addition to the information contained in the Periodic Table of the Elements, if you are writing a report on elements, or if you are creating an atomic model, the following article may be useful.

The Periodic Table of the Elements (also called the Periodic Table of the Elements) is organized so that scientists can quickly identify the properties of each element, such as mass, electron number, electronic configuration, unique chemical properties. Metal is on the left side of the meter and metal is on the right side. Dmitri Mendeleev first offered an organizational element to help us understand

2 History of the Periodic Table Mendeleev places the elements in the world's first periodic table and Mendeleev increases the atomic number and increases atomic weight by comparing the number of mutually reactive elements to the world's first periodic table Place elements in. Quality 3 by comparing the number of elements that react with each other 3 The modern periodic table is different from the Mendeleev table - he does not know that protons and electrons are different from the table of Mendeleev - protons and electrons are atomic I do not know to increase the number. Mass proton number Proton number Electron number Electronic number It is not mass increasing atom number than electron number

Please look carefully at periodic table A. The history of the boundary table Mendeleev arranged these elements in the world's first periodic table, Mendeleev arranged

In the standard period table, the elements are listed in ascending order of element number Z (the number of protons in the nucleus). When a new electron shell has its first electron, a new line (cycle) begins. Columns (groups) are determined by the electronic configuration of the atoms and elements with the same number of electrons in a particular subshell are in the same column (eg oxygen and selenium are in the outermost p subshell so that the same column ). There are four electrons in the center. Elements with similar chemical properties generally belong to the same family of the periodic table, but in some aspects of the f block and d block elements of the same period tend to have similar properties. Therefore, it is relatively easy to predict the chemical nature of an element if you know the nature of the element around the element.