Riccardor

Riccardor

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Group 7 Infographic

Chemistry halogens, found in Group 7 of the Periodic Table. This group consists of the elements fluorine, chlorine, bromine, iodine and astatine - the as yet unnamed artificial elem.

Natural vs Man Made Synthetic Chemicals Toxicity

"Whether a chemical is naturally occuring or man-made tells us NOTHING about its toxicity" ; Sense About Science chemicals infographic: natural and manmade chemicals