Propylene (propene), polypropylene (PP, polypropene) plastic building block. Atoms are represented as spheres with conventional color coding: hydrogen (white), carbon (grey).
Citric acid (citric acid) molecule. Atoms are represented as spheres with conventional color coding: hydrogen (white), carbon (grey), oxygen (red).
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Facebook molecule. Atoms are represented as spheres with conventional color coding: hydrogen (white), carbon (grey), oxygen (red).)
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