Which statement best explains why the element carbon forms so many compounds?

• A. Carbon only forms ionic bonds, which are very strong and stable.
• B. Carbon atoms are larger than most other elements, enabling more bonding possibilities.
• C. Carbon can form four covalent bonds, allowing it to bond with many other elements and itself.
• D. Carbon has a full valence shell, making it highly reactive.

Answer: (C)

Verified step by step guidance

1. Understand that the question is asking about the reason why carbon forms a large number of compounds, focusing on its bonding behavior and atomic properties.
2. Recall that carbon has four valence electrons, which allows it to form up to four covalent bonds with other atoms, including other carbon atoms.
3. Recognize that forming four covalent bonds enables carbon to create a vast variety of stable molecules, including chains and rings, which is the basis for organic chemistry.
4. Evaluate the incorrect options: carbon does not only form ionic bonds, it is not particularly large compared to other elements, and it does not have a full valence shell (which would make it less reactive).
5. Conclude that the best explanation is that carbon's ability to form four covalent bonds allows it to bond with many elements and itself, leading to the formation of many compounds.