Inorganic Chemistry

Chemically, diamond is the purest form of Carbon (crystal structure). Hence, it is a fundamental element. Sand is basically made up of Silicon and Oxygen, Marble is made up of Calcium, Carbon, and Oxygen while sugar is mainly the compound of Carbon, Hydrogen, and Oxygen.

The chemical composition of diamond is Carbon.

Elements of the periodic table are grouped as metals, metalloids (or semimetals), and nonmetals. Some gases (hydrogen, helium, nitrogen, oxygen, fluorine, neon, chlorine, argon, krypton, xenon, and radon) are elements & categorized as nonmetals, but most of the gases are compounds.

Technetium is a chemical element with atomic number 43. It was the first artificially produced element. Technetium was isolated by Carlo Perrier and Emilio Segre in 1937.