What term is used to describe the phenomenon where an element exists in two or more different physical forms in the same physical state?

💡 Solution & Explanation

Allotropism describes the property whereby a chemical element can exist in two or more distinct physical forms while remaining in the same aggregate state of matter. Isomerism pertains to compounds sharing identical molecular formulas but varying structural arrangements of their constituent atoms. Carbon exemplifies this phenomenon vividly through its well-known allotropes, including diamond, graphite, and fullerenes.