Allotropy of carbon: Carbon, diamond, and graphite are collectively referred to as what? Identify the term for different structural forms of the same element. Choose the correct term.

What is being asked?
The common term for distinct structural forms of the same element.

Given data

• Element: Carbon; forms: diamond (sp³), graphite (sp²), amorphous carbon

Concept/Approach
Different bonding/structure of the same element are called allotropes; isomers apply to compounds, isotopes to nuclei with different neutron counts, isobars to nuclides with the same mass number.

Final Answer
Allotropes