Fluorine is an extremely reactive chemical element with atomic number 9. At standard conditions, pure fluorine is a toxic pale yellow diatomic gas. Fluorite, the element’s primary mineral source, was first described in 1529, and fluorine was proposed as an element in 1810. As the lightest halogen and most electronegative reactive element, it is difficult to separate from its compounds, and several early experimenters died or were injured in the attempt. French chemist Henri Moissan finally succeeded in 1886 using low-temperature electrolysis, a process still used today. Global fluorochemical sales amount to more than US$15 billion a year, including in toothpaste and water fluoridation, refrigerants, Teflon for electrical insulation and cookware, pharmaceuticals, aluminium refining and steelmaking. Fluorocarbon gases are generally greenhouse gases. Fluorine has no known metabolic role in mammals, but a few plants and sea sponges synthesize poisonous fluorocarbons to deter predators
24/01/24 | 4:23 pm
Test_vijay
24/01/24 | 4:15 pm
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23/01/24 | 11:11 am
WBBSE 2024 Madhyamik: Collect WB board Class 10th exam admit cards from Jan 24
WBBSE 2024 Class 10 Exams: The board has asked the students appearing for the exam and their respective schools to report errors in the admit card by January 29, 2024....
03/10/23 | 7:21 am
Governments SHREYAS Scheme Empowers SCs and OBCs through Education
In a significant effort to empower economically disadvantaged Scheduled Castes (SCs) and Other Backward Classes (OBCs), the Government’s umbrella scheme, “SHREYAS,” comprising four central sector sub-schemes, has been making a substantial impac...
