Fluorine is a chemical element; it has symbol F and atomic number 9. It is the lightest halogen [note 1] and exists at standard conditions as pale yellow diatomic gas. Fluorine is extremely reactive as it reacts with all other elements except for the light inert gases. It is highly toxic.

2025年1月8日 · fluorine (F), most reactive chemical element and the lightest member of the halogen elements, or Group 17 (Group VIIa) of the periodic table. Its chemical activity can be attributed to its extreme ability to attract electrons (it is the most electronegative element) and to the small size of its atoms .

Fluorine is the 9th element in the periodic table and has a symbol of F and atomic number of 9. It has an atomic weight of 18.99840 and a mass number of 19. Fluorine has nine protons and ten neutrons in its nucleus, and nine electrons in two shells.

Element Fluorine (F), Group 17, Atomic Number 9, p-block, Mass 18.998. Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images.

Fluorine is a chemical element with symbol F and atomic number 9. Classified as a halogen, Fluorine is a gas at room temperature. J.C. Slater, J Chem Phys, 1964, 41 (10), 3199-3205. DOI:10.1063/1.1725697. B. Cordero, V. Gómez, A.E. Platero-Prats, M. Revés, J. Echeverría, E. Cremades, F. Barragán, S. Alvarez, Dalton Trans. 2008, 21, 2832-2838.

fluorine , Nonmetallic chemical element, chemical symbol F, atomic number 9. The lightest halogen, it is the most reactive element, forming compounds with all others except helium, neon, and argon (the lighter noble gas es). Its only valence is 1, in F …

Denoted by the chemical symbol F, fluorine (pronounced as FLU-eh-reen) is a highly reactive nonmetal existing naturally in the state of gas.

Fluorine is a chemical element of the periodic table with chemical symbol F and atomic number 9 with an atomic weight of 18.9984 u and is classed as nonmetal and is part of group 17 (fluorine group). Fluorine is gas at room temperature.

2023年3月30日 · Fluorine (F) is the heaviest of the halogen elements (Group 17; Group VIIa) and the chemical element with the highest reactivity. Even the noble gases krypton, xenon, and radon can combine with fluorine to produce compounds.

Fluorine: element properties, electonic configuration, isotopes, compounds, reactions and pictures.