Δ/ I for the transition of carbon in the diamond form to...

$\Delta / I$ for the transition of carbon in the diamond form to carbon in the graphite form is $-453.5 \mathrm{cal}$. This suggests that (1) Graphite is chemically different from diamond. (2) Graphite is as stable as diamond. (3) Graphite is more stable than diamond. (4) Diamond is more stable than graphite.

$\Delta / I$ for the transition of carbon in the diamond form to carbon in the graphite form is $-453.5 \mathrm{cal}$. This suggests that
(1) Graphite is chemically different from diamond.
(2) Graphite is as stable as diamond.
(3) Graphite is more stable than diamond.
(4) Diamond is more stable than graphite.

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Key Concepts

Allotropy

Allotropy refers to the existence of an element in more than one form, each with different structural arrangements and properties. Understanding the concept of allotropy is essential when comparing different forms of an element, such as different crystalline configurations or molecular structures, and explaining their variations in properties such as stability and reactivity.

Thermodynamic Stability

Thermodynamic stability describes the energy state of a substance relative to its possible forms. A more stable form is one that is at a lower energy state, meaning that conversions from a less stable form to a more stable form typically release energy. This concept is central to understanding why a substance naturally favors one form over another based on its energy content.

Exothermic Process

An exothermic process is one in which energy is released, usually in the form of heat, as a chemical or physical transformation occurs. Recognizing an exothermic transformation helps in determining the relative stability of different substances: the release of energy during a transition often indicates that the final product is energetically more favorable or stable than the initial form.

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