Original sentence: The concept of allotropy was originally devised by the Swedish scientist Baron Jons Jakob Berzelius (1779-1848)
Edited sentence: (n=10, 12, 13, 14…).Allotrope: The term allotrope is used by chemists to describe an elemental substance that can exist in two or more distinct structural forms in the same solid state.Allotropes can be three-dimensional crystalline solids, they can be two-dimensional crystalline solids, but (sensu stricto) elemental liquids and gases do not have allotropes, because these physical states of matter do not possess solid structural form.An allotrope of an element has a chemical formula that does not have a unique numerical value; this is because there is no chemical limit to the structural size of the allotrope.Carbon nanotubes (nC) are a cylindrical form of graphite with indeterminate length and are therefore also an allotrope of carbon.Diamond (chemical formula nC) is a tetrahedral crystalline allotrope of carbon (theoretical basic crystalline unit 4C).For elements in their solid state an allotrope has a definite structurally form but indefinite physical mass because the basic crystalline unit of the allotrope can be repeated indefinitely.Fullerenes are a polyhedral structural form of graphite that do have a defined chemical formula (e.Graphite (nC) is a platy hexagonal crystalline allotrope of carbon (theoretical basic crystalline unit 6C).The concept of allotropy was originally devised by the Swedish scientist Baron Jons Jakob Berzelius (1779-1848) as a structural property of an elemental substance and is analogous to the mineral concept of a polymorphous crystal.The expansion of the term allotrope to include oxygen O2 and ozone O3 should be discouraged because these substances are gases not solids, each has a unique chemical formula and both possess different chemical reactivities.the regular dodecahedron C20) but Fullerenes are considered to be allotropes of carbon because they form an equation family C2n where n is a mathematically series of indefinite limit