Believe it or not, the hardest element of the periodic table is actually carbon (the stuff that makes up most of our bodies and all living things… and things like pencil leads or coal).
Carbon exists in different forms like graphite or graphene, but also it can be in the form of diamonds, and it’s actually as diamond that it becomes the strongest element in the periodic table. In nature diamonds are made when other types of carbon go through lots of pressure and really high temperatures… they turn from usually soft, black carbon into pretty diamonds!
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