* Organic compounds are defined as compounds containing carbon (C) and hydrogen (H). These are the fundamental building blocks of organic molecules.

* However, organic compounds often contain other elements as well, such as:

* Oxygen (O): Found in alcohols, aldehydes, ketones, carboxylic acids, etc.

* Nitrogen (N): Found in amines, amides, proteins, etc.

* Sulfur (S): Found in thiols, disulfides, etc.

* Phosphorus (P): Found in phosphate groups in DNA, RNA, and ATP.

* Halogens (F, Cl, Br, I): Found in various synthetic and natural organic compounds.

Therefore, while carbon and hydrogen are essential, other elements are frequently present in organic compounds.

Let me know if you'd like more details on specific elements and their role in organic compounds!