Halogens are a group of non-metallic elements that are located in a in the periodic table. Halogens include elements such as fluorine, chlorine, bromine, iodine, and astatine. These elements share some common properties, including strong oxidation, active chemical reactivity, and specific atomic structures.
1.They have an outermost electron number of 7 and are mainly oxidizing in chemical reactions.
2.As the number of their electron layers increases and the radius of the atom increases, their ability to obtain electrons gradually decreases, and therefore, their oxidation decreases sequentially.
Melting boiling point: Gradually increases from F2 to I2. Density: Gradually increasing from f2 to i2.
The active chemical reactivity of halogens is related to their atomic structure. The outermost number of electrons of the halogen atom is 7 and these electrons can easily acquire other electrons to achieve a stable electron configuration. As a result, halogens are prone to chemical reactions with other elements to form stable halides. Halogens are used in a wide range of applications. For example, chlorine is widely used in bleach, disinfectants, and synthetic organic compounds, among others. Bromine is used in the manufacture of dyes, pesticides and pharmaceuticals. Fluorine is a potent oxidizing agent that can be used in the preparation of substances such as fluorinated compounds and freons. Iodine has a wide range of applications in medical and biological fields, such as sterilization and sterilization and synthesis of thyroid hormones. Overall, the properties and applications of halogens are very diverse. Their strong oxidizing properties, active chemical reactivity and specific atomic structure make halogens have a wide range of applications in chemical and industrial fields. With the continuous progress of science and technology, the application prospect of halogen will be broader.