The existance of two or more forms of the same element in the same physical state is known as
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The existence of two or more forms of the same element in the same physical state is known as allotropy. Allotropy is the property of some elements to exist in two or more different forms, called allotropes. These allotropes have different physical and chemical properties due to the different arrangements of atoms in their crystal lattice structures. For example, carbon has three common allotropes: diamond, graphite, and fullerene. Each of these allotropes has different physical and chemical properties despite being made up of the same element.