What is Fluorine?

Fluorine, the ninth element on the periodic table, is the most reactive and electronegative element known. This pale yellow gas is a key player in chemistry and everyday life.

Atomic Number: 9

Symbol: F

Atomic Mass: 18.998 u

Category: Halogen

State at Room Temperature: Gas

Discovered By: Henri Moissan (1886)

⚛️ Atomic Structure of Fluorine

Fluorine has nine protons, ten neutrons (in its only stable isotope, Fluorine-19), and nine electrons, with seven in its outer shell, driving its reactivity.

💡 Did you know? Fluorine has no stable isotopes other than Fluorine-19, unlike most elements!

🔬 Fluorine Properties

Fluorine is extremely reactive, bonding with almost all elements, even some noble gases under special conditions. It's toxic and corrosive as a gas.

🧪 How Was Fluorine Discovered?

In 1886, French chemist Henri Moissan isolated Fluorine by electrolyzing hydrogen fluoride, earning him a Nobel Prize for overcoming its extreme reactivity.

⚡ Uses of Fluorine

💡 Fun Facts About Fluorine

⚠️ Safety & Precautions

Fluorine is highly toxic and corrosive, attacking skin, eyes, and lungs. It requires specialized handling in inert containers like nickel or Teflon.

🔬 Explore More Elements