Group: Halogens

Halogens (7th main group) are very reactive non-metals in their elemental state. They occur in nature mainly as singly negatively charged anions in salts. Elemental halogens are colored, easily volatile to gaseous water-soluble substances.

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

17Cl

Chlorinepale yellow-green gas

35Br

Brominereddish-brown

53I

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

85At

Astatineunknown, probably metallic

117Ts

Tennessinesemimetallic (predicted)

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