What is the difference between a diamond and graphite?
Diamond and graphite are allotropes of carbon. These have different chemical and physical properties. The main difference between diamond and graphite is that diamond is made out of sp3 hybridized carbon atoms whereas graphite is made out of sp2 hybridized carbon atoms.
Why graphite is not a diamond?
This process requires no chemical reaction with an external material. Although graphite is a more stable form of crystalline carbon than diamond under normal conditions, there is a significant kinetic energy barrier that the atoms must overcome in order to reach the lower energy state.
Is graphite better than diamonds?
Yet diamond is the hardest mineral known to man (10 on the Mohs scale), and graphite is one of the softest (less than 1 on the Mohs scale). As a result, diamond is the ultimate abrasive, whereas graphite is an excellent lubricant. Diamond is an electrical insulator while graphite is a good conductor of electricity.
Why diamond is expensive than graphite?
Diamond is costlier due to the rareness, unique properties and wide varieties of application potentials than graphite. … Chemists have figured out that under the right combination of temperature, pressure and time, carbon atoms e.g. from graphite can be converted into diamonds.
Are diamond and graphite allotropes?
Diamond, graphite and fullerenes (substances that include nanotubes and ‘buckyballs’ , such as buckminsterfullerene) are three allotropes of pure carbon.
Can diamond turn into graphite spontaneously?
Because diamond is thermodynamically unstable with respect to graphite, this means that delta G is negative for this process and diamond will spontaneously turn into graphite. However, because this process is also kinetically stable, this means that the process will occur very slowly.
Are diamonds worthless?
Diamonds are intrinsically worthless: Former De Beers chairman (and billionaire) Nicky Oppenheimer once succinctly explained, “diamonds are intrinsically worthless.” Diamonds aren’t forever: They actually decay, faster than most rocks.
Is coal a diamond?
Over the years it has been said that diamonds formed from the metamorphism of coal. According to Geology.com, we now know this is untrue. “Coal has rarely played a role in the formation of diamonds. … The diamonds form from pure carbon in the mantle under extreme heat and pressure.
Is graphite or diamond harder?
Diamond is harder than graphite because each of its carbon atoms form four covalent bonds in a tetrahedral structure and also due to the presence of strong covalent bonds in it.
Are graphite and diamond isomers?
Chemical compound that has the same molecular formula – the same number and kinds of atoms – as another compound, but a different structural arrangement of the atoms in space, and, therefore, different properties. For example, graphite (pencil lead) and diamond are isomers of carbon.
What do graphite and diamond have in common?
Diamond and graphite are both allotropes of carbon. This means they are both made up of carbon atoms arranged differently and exist in the same physical state. They both have a giant covalent structure. Diamond has a tetrahedral structure and is the hardest material known to man.
How strong is graphite?
Graphite is known to be one of the weaker allotropes of carbon. It is not known to possess high tensile strength and is known to easily crumble under force. Pencil leads are often made up of graphite.
Where do you find graphite?
Graphite is most often found as flakes or crystalline layers in metamorphic rocks such as marble, schist’s and gneisses. Graphite may also be found in organic-rich shale’s and coal beds.
What is the cause of difference between diamond and graphite?
In diamond, strong three-dimensional networks are formed due to the presence of covalent bonds. Graphites are formed due to the weak van der Waals force of attraction. Soft in nature. … Since there is no free carbon atom, the diamond does not conduct electricity.