Definition: Secondines, also known as secondaries in the context of chemistry and physics, are a class of compounds that have two or more atoms bonded together. These compounds are often found in natural materials like coal, oil, and other fossil fuels, but can also be produced industrially through chemical reactions. Secondines exhibit unique physical properties due to their complex structure. They can be made up of different types of carbon (C), hydrogen (H), and oxygen (O) atoms bonded together by various types
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