A term usually reserved for those chemical elements that are very poor electrical conductors in the solid state and liquid states. A number of them are gases at room temperature. When solid or liquid, they tend to have a matt rather than a lustrous appearance. Non-metals gain electrons easily to form anions. About 20% of the known chemical elements are non-metals.

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 Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn
Fr Ra Ac
Lanthanides Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu
Actinides Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr

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Subjects: Chemistry