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</html><description>De metalen van het periodiek systeem zijn belangrijke elementen die we overal om ons heen aantreffen, van de munten in onze zakken tot de draden die onze huizen van stroom voorzien. In feite zijn de meeste elementen op het periodiek systeem metalen! Ze hebben enkele gemeenschappelijke eigenschappen gemeen, zoals dat ze glanzend zijn, goede warmte- ... Lees verder</description><thumbnail_url>https://chemuza.org/wp-content/uploads/2023/08/tableau-periodique-des-metaux.jpg</thumbnail_url></oembed>
