Question: What is Allotropy give two properties of diamond?

Diamond is a well-known allotrope of carbon that exhibits hardness and high dispersion of light. … Fullerenes are a class of carbon allotropes in which carbon takes the form of a hollow sphere, ellipsoid, or tube. This class of materials includes carbon nanotubes, buckyballs, and the newly discovered nanobuds.

What are two properties of diamond?

Besides the hardness, diamond provides an impressive combination of chemical, physical and mechanical properties:

  • Hardness.
  • Low coefficient of friction.
  • High thermal conductivity.
  • High electrical resistivity.
  • Low thermal expansion coefficient.
  • High strength.
  • Broad optical transparency from ultra violet to infra red.

What is allotropy give two examples?

Two or more forms of the same elements in same physical state which differ in their physical properties but have same chemical properties are called allotropic forms or (allotropes) and the phenomenon is called allotropy. Carbon, phosphorus and sulphur are some elements which exhibit allotropy.

What are the properties diamond?

Material properties of diamond

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Diamond
Cleavage Perfect; parallel to the octahedral face
Fracture Irregular
Mohs scale hardness 10
Streak white

What are the properties of an allotrope?

Allotropes generally differ in physical properties such as color and hardness; they may also differ in molecular structure or chemical activity, but are usually alike in most chemical properties. Diamond and graphite are two allotropes of the element carbon.

What are Graphenes properties?

The most outstanding properties of graphene are:

  • High thermal conductivity.
  • High electrical conductivity.
  • High elasticity and flexibility.
  • High hardness.
  • High resistance. …
  • Ionizing radiation is not affected.
  • Able to generate electricity by exposure to sunlight.
  • Transparent material.

What are the properties of diamond and graphite?

Explain the difference in properties of diamond and graphite on the basis of their structures.

DIAMOND GRAPHITE
1) It has a crystalline structure. 1) It has a layered structure.
2) It is made up of tetrahedral units. 2) It has a planar geometry.

What is Allotropy name two elements which exhibit Allotropy?

Two such elements that exhibit allotropy are carbon (C) and sulphur (S).

What is Allotropy give two examples of allotropes of Sulphur?

The allotropes of Sulphur are rhombic Sulphur, monoclinic Sulphur and plastic Sulphur. Note: The allotropy is only used for elements and not for chemical compounds.

What do you mean by Allotropy of metal?

The property of some metals and alloys that exhibit different crystalline lattice at different temperatures is called allotropy. Allotropy is a very important property for materials; these allotropic changes are the basis for heat treatment of many engineering materials.

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What are the different properties and applications of diamond?

Diamond provides an impressive combination of chemical, physical and mechanical properties:

  • The hardest known material.
  • Low coefficient of friction.
  • High thermal conductivity.
  • High electrical resistivity.
  • Low thermal expansion coefficient.
  • High strength.
  • Broad optical transparency from ultra violet to infra red.

Why is diamond an insulator?

In a diamond, all the four electrons present in the outer shell on each carbon atom are used in covalent bonding, so there are no delocalised electrons present and thus makes the diamond an insulator. Complete answer: … The diamond is an insulator.

What is diamond formula?

Hence, the molecular formula of diamond is C as it consists of only carbon atoms. … In diamond carbon is linked with 4 other carbons, so it has a C – 4 arrangement, while in graphite, the carbon atoms are linked with 6 other carbons, so it has a C – 6 arrangement. These are the crystalline allotropes of carbon.

What is allotropy and Catenation?

The key difference between catenation and allotropy is that catenation refers to the biding of an element to itself, forming chain or ring structures, whereas allotropy refers to the existence of different physical forms of the same chemical element.

What is allotropy in chemistry class 10?

When an element possess two or more different forms in the same state, they are called allotropes and the phenomenon is known as allotropy. Diamond and graphite are the two allotropes of carbon.

What is allotropic form of carbon?

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.

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