Question

Question What element(s) MUST be present in a chemical compound to be considered organic hydrogen, only nitrogen and calcium carbon and hydrogen Od oxygen and helium

Answer 1

To be considered organic, a chemical compound must contain carbon and hydrogen as essential elements. Therefore, the correct answer from the options you've provided is **"carbon and hydrogen."** Organic compounds may also contain other elements such as oxygen, nitrogen, sulfur, and phosphorus, but the presence of carbon and hydrogen is fundamental to organic chemistry.