Which elements are found in a hydrocarbon?

Which elements are found in a hydrocarbon?

• A. Carbon and Hydrogen atoms only
• B. Oxygen and Nitrogen atoms only
• C. Carbon, Hydrogen, and Oxygen
• D. Hydrogen and Helium atoms only

Answer: (A)

Hydrocarbons are compounds made only from carbon and hydrogen. That means every molecule consists of carbon atoms bonded to hydrogen atoms, with no other elements present in the formula. Examples like methane (CH4), ethane (C2H6), and benzene (C6H6) all fit this pattern. If you introduce elements such as oxygen or nitrogen, you’d have alcohols, amines, or other types of compounds, not hydrocarbons. Helium doesn’t form the kind of covalent networks that hydrocarbons require, so it isn’t part of hydrocarbon composition. Therefore, the elements found in a hydrocarbon are carbon and hydrogen only.

Hydrocarbons are compounds made only from carbon and hydrogen. That means every molecule consists of carbon atoms bonded to hydrogen atoms, with no other elements present in the formula. Examples like methane (CH4), ethane (C2H6), and benzene (C6H6) all fit this pattern. If you introduce elements such as oxygen or nitrogen, you’d have alcohols, amines, or other types of compounds, not hydrocarbons. Helium doesn’t form the kind of covalent networks that hydrocarbons require, so it isn’t part of hydrocarbon composition. Therefore, the elements found in a hydrocarbon are carbon and hydrogen only.