Halogens
9
F
Fluorine
19
17
Cl
Chlorine
35
35
Br
Bromine
80
53
I
Iodine
127
85
At
Astatine
210
ABOUT
This group is naturally diatomic, meaning that they exist as molecules with two atoms: they like to travel in pairs. They're very reactive, and form ionic bonds (become positively or negatively charged) with metals, which are the strongest form of chemical bond. Hopeless romantics.
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fluorine is very pale yellow, chlorine is yellow-green, and bromine is red-brown. Iodine crystals are shiny purple |
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gases (Fluorine and Chlorine), liquids (Bromine), solids (Iodine and Astatine) |
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combined with metals, they make salts called metal halides |
HISTORY
Halogens have a history of being deadly. The discovery of Fluorine injured, blinded and even killed my scientists. Chlorine combined with hydrochloric acid, as well as sulfuric acid was used as a poisonous gas during World War I. Astatine is so radioactive it has the capacity to kill within seconds with the heat and radiation it gives off during decay.