All forms of carbon.
All forms of carbon.
Graphite, diamonds, Lonsdaleite, C60 (Buckminsterfullerene), C540 Fullerene, C70 Fullerene, Amorphous carbon, and Single-walled carbon nanotube are all solid allotropes of carbon. Allotropes are different structural forms of the same element.
Carbon exists in different forms, but in its most common form as graphite, it appears as a shiny, black, opaque material. Its other form, diamond, is transparent and has a crystal structure. Carbon atoms can also form nanotubes or fullerenes, which have unique shapes resembling tubes or spheres.
The three allotropes (forms) are ;- Graphite Diamond Buckminster Fullerene (Footballene). Do NOT confuse with Isotopes. Carbon also exhibits three isotopes viz'. Carbon -12 (The most common isotpe) Carbon - 13 (used in nmr) Carbon - 14 (used in carbon dating). An allotrope is an element that exhibits differen physical characteristics. An isotope is an element that has a different number of neutrons in the nucleus.
Graphite is in pencils, and Graphite is made up of Carbon Atoms, the same as Diamond, the only difference is its structure, Diamond has 4 covalent Carbon Bonds, whereas, graphite as 3, and a spare delocalised electron, meaning, graphite forms layers and can be used as a lubricant.
The are all composed of carbon (although coal commonly also contains other elements such as sulphur).
The common name for graphite is black lead.
A diamond is more valuable than graphite because of its rarity, hardness, and brilliance. Diamonds are formed deep within the Earth's mantle under extreme pressure and temperature, making them relatively scarce. Additionally, their exceptional durability and unique optical properties make them highly prized in the jewelry industry.
Fullerenes can exist in different forms at room temperature, including solids, liquids, and gases. The most common form of fullerenes found at room temperature is solid, such as C60 which has a fullerene structure.
Yes, graphite is more common than diamond.
Coal, pencil lead, and diamonds are all forms of carbon. The difference lies in how the carbon atoms are structured. In coal, carbon atoms are loosely attached, while in diamonds they are tightly bonded, resulting in the hardness of diamonds. Pencil lead is a mixture of graphite (which is a crystalline form of carbon) and clay.
The most common use of diamonds is for industrial tools, because industrial diamonds are the most common diamonds.