Chemical Elements.com - Fluorine (F)

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Basic Information

Name: Fluorine
Symbol: F
Atomic Number: 9
Atomic Mass: 18.998404 amu
Melting Point: -219.62 °C (53.530006 K, -363.31598 °F)
Boiling Point: -188.14 °C (85.01 K, -306.652 °F)
Number of Protons/Electrons: 9
Number of Neutrons: 10
Classification: Halogen
Crystal Structure: Cubic
Density @ 293 K: 1.696 g/cm³
Color: Greenish

Atomic Structure

Number of Energy Levels: 2

First Energy Level:

Second Energy Level:

Isotopes

Isotope	Half Life
F-18	1.8 hours
F-19	Stable

Facts

Date of Discovery: 1886
Discoverer: Joseph Henri Moissan
Name Origin: From the Latin word fluo (flow)
Uses: Refrigerants
Obtained From: mineral fluorite

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