# elements

name: Fluorine
symbol: F
phase: gas
category: halogen
interesting_fact:
This pale yellow-green gas is the most reactive electronegative element.  It reacts with every element except the lightest noble gases.


name: Phosphorus
symbol: P
phase: solid
category: nonmetal
interesting_fact:
This element was first isolated in 1669 by German chemist Hennig Brandt, who produced it by boiling large amounts of urine down to a thick syrup and then roasting it in a furnace with charcoal.


name: Titanium
symbol: Ti
phase: solid
category: transition metal
interesting_fact:
It is light, strong, and tough, making it an important material for aerospace applications.  It is also hightly biocompatible, making it a common material for dental and surgical implants.


name: Cadmium
symbol: Cd
phase: solid
category: transition metal
interesting_fact:
It can be used to make a bright yellow pigment for oil paints.  However, due to the toxicity of cadmium, other yellow pigments are now preferred for most applications.


name: Tellurium
symbol: Te
phase: solid
category: metalloid
interesting_fact:
Many tellurium compounds have pungent odors, similar to the corresponding sulfur compounds but more intense and unpleasant.


name: Iodine
symbol: I
phase: solid
category: halogen
interesting_fact:
Upon heating, grayish crystals of solid iodine will melt and produce large amounts of purple iodine vapor.


name: Xenon
symbol: Xe
phase: gas
category: noble gas
interesting_fact:
It was the first noble gas to be successfully reacted with another element to yield a stable molecule.


name: Osmium
symbol: Os
phase: solid
category: transition metal
interesting_fact:
Under ordinary conditions, it is the densest chemical element.  Its density is more than twice that of lead.


name: Bismuth
symbol: Bi
phase: solid
category: metal
interesting_fact:
Once thought to be the heaviest element that had a stable isotope, it's now known that all isotopes of bismuth undergo reactive decay.  However, the most common isotope has a half-life much longer than the current ago of the universe.


name: Radon
symbol: Rn
phase: gas
category: alkali metal
interesting_fact:
It is a radioactive gas that often accumulates in basements and cellars due to its production from decay of trace amounts of uranium-containing minerals in the ground.  Inhalation of radon in indoor spaces is a significant contributor to lung cancer risk for humans.


