The correct answer is D. Charcoal and diamond.
Charcoal is a form of carbon that is produced by heating wood or other organic materials in the absence of oxygen. Diamond is a form of carbon that
is produced by deep geological processes involving high temperatures and pressures.Charcoal and diamond are both made of carbon, but they have very different structures. Charcoal is a disordered solid with a lot of empty space. Diamond is a very ordered solid with a very dense crystal structure.
Charcoal is a good conductor of electricity, while diamond is a good insulator. Charcoal is also a good absorber of gases, while diamond is not.
Charcoal is used in a variety of applications, including fuel, water purification, and deodorizing. Diamond is used in jewelry, industrial cutting tools, and other applications where a very hard material is needed.
In conclusion, charcoal and diamond are chemically most dissimilar because they have very different structures, properties, and uses.