1, drink water from Yisheng and Yikang Cup;
2. Install a water purifier;
3. boiling. After the water boils, open the lid and continue to cook 1 min. There is no other simple, easy-to-operate and low-cost method. It is not advisable to add any chemicals, which will cause new pollution.
Fluorine is light yellow gas in standard state, yellow liquid when liquefied and colorless liquid at -252℃.
Fluorine is a nonmetallic chemical element with chemical symbol F and atomic number 9. Fluorine, one of halogen elements, belongs to group ⅶ A of the periodic table and is located in the second period of the periodic table. The elemental fluorine is F2, which is a pale yellow and highly toxic gas. Fluorine gas is very corrosive and extremely active in chemistry. It is one of the most oxidizing substances and can even react with some inert gases under some conditions. Fluorine is a key element in special plastics, rubber and refrigerators (chlorofluorocarbons). Due to the special chemical properties of fluorine, fluorine chemistry plays an important role in the history of chemical development.