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Category: Halogens

Halogens refer to elements of the 7th main group, are very reactive in their elemental state, colored and react with metals to form salts. Their name (corpora halogenia) goes back to Jöns Jakob Berzelius.

Fluorinevery pale yellow (gas); bright yellow (liquid); alpha is opaque, beta is transparent (solid)

Chlorinepale yellow-green gas

Brominereddish-brown

Iodinelustrous metallic gray (solid); black/violet (liquid); violet (gas)

Astatineunknown, probably metallic

H He Li Be B C N O F Ne Na Mg Al Si P S Cl Ar K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe Cs Ba La Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn Fr Ra Ac Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr Rf Db Sg Bh Hs Mt Ds Rg Cn Nh Fl Mc Lv Ts Og

Legend

Nonmetals Noble gases Alkali metals Alkaline earth metals Metalloids Halogens Metals Transition metals Lanthanides Actinides Unknown