Which of the following is NOT a principle of green chemistry?

The principle of green chemistry that is not included in the typical 12 principles is the concept of scarcity of resources. Green chemistry focuses on minimizing the environmental impact of chemical production and use through principles that promote sustainability, efficiency, and safety.

The other principles mentioned emphasize the importance of reducing waste generation, ensuring that solvents used in chemical processes are safer for both humans and the environment, and designing chemical products to break down safely after their intended use, thereby preventing long-term environmental damage. These principles all highlight a proactive approach to chemical design that prioritizes sustainability and safety, which aligns with the core goals of green chemistry. Scarcity of resources, while an important consideration in broader sustainability discussions, does not represent a specific principle of green chemistry.