Diamond and graphite are two allotropes of carbon: pure forms of the same element that differ in structure.
What are allotropes explain the structure of diamond and graphite?
Allotropes are defined as the different forms of an element which have different physical but similar chemical properties. Both diamond and graphite are network covalent solids in which the carbon atoms are linked by covalent bonds. … It is bonded tetrahedrally to four other carbon atoms by simple covalent bonds.
What is allotrope structure?
When an element exists in more than one crystalline form, those forms are called allotropes; the two most common allotropes of carbon are diamond and graphite. Every carbon atom is covalently bonded at the four corners of the tetrahedron to four other carbon atoms. …
What is an allotrope Class 8?
Answer: The term allotrope refers to one or more physical forms of a chemical element that occurs in the same physical state. Allotropes may show differences in chemical and physical properties.
What are the allotropes of graphite?
The two known forms of graphite, alpha (hexagonal) and beta (rhombohedral), have very similar physical properties (except that the layers stack slightly differently). The hexagonal graphite may be either flat or buckled.
What is structure of diamond and graphite?
Diamond is a type of carbon that has its atoms arranged in a diamond cubic crystal structure. Another solid form of carbon known as graphite is the chemically stable form of carbon at ambient temperature and pressure, but diamond almost never transforms to it.
What is allotropic form?
allotropy, the existence of a chemical element in two or more forms, which may differ in the arrangement of atoms in crystalline solids or in the occurrence of molecules that contain different numbers of atoms. … Elements exhibiting allotropy include tin, carbon, sulfur, phosphorus, and oxygen.
What is the structure of a diamond?
Diamond is a giant covalent structure in which: each carbon atom is joined to four other carbon atoms by strong covalent bonds. the carbon atoms form a regular tetrahedral network structure. there are no free electrons.
How does diamond differ from graphite?
Graphite and diamond are two of the most interesting minerals. They are identical chemically – both are composed of carbon (C), but physically, they are very different. … Graphite is very soft and has a hardness of 1 to 2 on this scale. Diamonds are the hardest known natural substance and have a hardness of 10.
Why diamond and graphite are allotropic modifications of carbon?
Diamond & graphite are carbon elements, their chemical properties are same i.e. they form CO_2 on burning but differ in physical state. Hence they are allotropic modifications.
What is called allotrope?
The term allotrope refers to one or more forms of a chemical element that occur in the same physical state. The different forms arise from the different ways atoms may be bonded together. … For example, graphite and diamond are both allotropes of carbon that occur in the solid state.
Is graphite an allotrope of carbon?
Diamond, graphite and fullerenes (substances that include nanotubes and ‘buckyballs’ , such as buckminsterfullerene) are three allotropes of pure carbon.
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.