Allotropes of carbon

Allotropes may display very different chemical and physical properties. For example, graphite and diamond are both allotropes of carbon that occur in the solid state. Graphite is soft, while diamond is extremely hard. Allotropes of phosphorus display different colors, such as red, yellow, and white.

Allotropes have different physical and chemical properties from one another. For example, diamond and graphite (two allotropes of carbon) have different appearances, hardness values, melting points, boiling points, and reactivities.

• Eight allotropes of carbon: a) diamond, b) graphite, c) lonsdaleite, d) C60 buckminsterfullerene, e) C540, Fullerite f) C70, g) amorphous carbon, h) zig-zag single-walled carbon nanotube.
• Carbon is capable of forming many allotropes (structurally different forms of the same element) due to its valency.

Allotropes are different forms of the same element. Different bonding arrangements between atoms result in different structures with different chemical and physical properties. Allotropes occur only with certain elements, in Groups 13 through 16 in the Periodic Table.

Allotropes are different structural forms of the same element and can exhibit quite different physical properties and chemical behaviours. The change between allotropic forms is triggered by the same forces that affect other structures, i.e., pressure, light, and temperature.

bismuth

Nitrogen does not show allotropy due to its weak N__N single bond. Therefore, ability of nitrogen to form polymeric structure or more then one structure or become less. Hence , nitrogen does not show allotropy.

Nitrogen does not show allotropy because of its small size and high electronegativity. The single N-N bond is weaker than P-P bond because of high inter electronic repulsions among non-bonding electrons due to the small bond distance. Hence it does not show allotropy.

These different forms are known as allotropes. Ozone is an allotrope of oxygen, for example, while graphite and diamond are both allotropes of carbon. But nitrogen only has one allotrope – dinitrogen – and doesn’t have any that resemble heavier elements in its group.

Chlorine does not show catenation property and also the allotropic forms for every element is observed through different reactions and experiments and it was found that chlrine does not exist in allotropic form. So it is fact based question.

Nitrogen is a colorless, odorless gas; in its elemental form, nitrogen is found as the diatomic molecule N2, in which the two nitrogen atoms are held together by a triple bond….Group 5A — The Pnictogens.

Allotropes of Phosphorus

An allotrope is one way that atoms can be arranged in a solid. An isotope is one way that protons and neutrons can form the same atomic element. Isotopes are atoms that have a different number of neutrons than a different isotope.