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Cartes-fiches
Kalium
Potassium
Wasserstoff
Hydrogen
Natrium
Sodium
Bor
Boron
Stickstoff
Nitrogen
Sauerstoff
Oxigen
Fluor
Fluorine
Silizium
Silicon
Phosphor
Phosphorus
Schwefel
Sulphur
Fluor
Fluorine
Chlor
Chlorine
Brom
Bromine