The periodic table is one of the most important tools in the discipline of chemistry, which arranges elements according to their atomic number, from smallest to largest, and divides elements into different groups and periods. The position of an element in the periodic table contains many important information about that element, such as atomic number, electronic configuration, properties, etc. Therefore, inferring the position of elements in the periodic table is very important for chemical research and applications.
Commonly used group 0 element positioning method:
1) Specify the information of group 0 elements.
2) Determine the period according to the size.
Compare the atomic number of the element with the atomic number of the 0 element, and find the adjacent 0 element, then the element is in the same period as the 0 element with the larger ordinal number.
3) Find the difference in the number of families.
If the atomic number of an element is 1 or 2 more than the corresponding group 0 element, the element should be in group A or group A of the next period of the period in which the element of group 0 is located;
If it is less than the corresponding group 0 element 5 1, it should be in the same period of group a a;
If there is a difference between the other numbers, the corresponding family is found by the corresponding difference.
When inferring the position of an element in the periodic table, we usually need to consider the following aspects:1Atomic number: The atomic number is the basic sorting basis in the periodic table. Based on the magnitude of the atomic number, we can determine the approximate position of the elements in the periodic table. 2.Electron configuration: Electron configuration is an important factor in determining the chemical properties of an element and an important basis for inferring the position of an element in the periodic table. Through the electron configuration, we can know the number of valence electrons and the number of electron layers of the element. 3.Elemental properties: The properties of elements such as metallic, non-metallic, electronegative, etc., are also an important basis for inferring the position of elements in the periodic table. By comparing the properties of the elements, we can further determine the specific location of the elements. 4.Master the laws and characteristics of the periodic table, such as the division of families, the laws of periods, etc. 5.Familiarize yourself with the electronic configuration and properties of common elements for comparison and inference. 6.Note the influence of the half-full and full-filled states of the elements on the electron configuration, as well as the characteristics of their position in the periodic table. 7.For some special elements, such as noble gases, transition elements, etc., it is necessary to understand their special properties and location characteristics. Extrapolating the position of elements in the periodic table requires a combination of factors such as atomic number, electronic configuration, and elemental properties. In practical application, we need to be familiar with the laws and characteristics of the periodic table, master the electronic configuration and properties of common elements, pay attention to the half-full and full-filled states of elements and the position characteristics of special elements. Only then will we be able to accurately deduce the position of the elements in the periodic table.