Why does carbon make 4 bonds?

• A. To have enough electrons
• B. To gain a negative charge
• C. To fill its inner shell
• D. To attract other atoms

Answer: (A)

Carbon forms four bonds because it needs to fill its outer electron shell to a stable configuration. It has four valence electrons and, by sharing electron pairs with other atoms through covalent bonds, it effectively reaches eight electrons in its valence shell. This completion of the outer shell is what makes bonding to four partners so common for carbon, giving it the versatility to build many different organic structures.

Gaining a negative charge would create an ion rather than a stable covalent arrangement, filling an inner shell isn’t the issue since that shell is already full, and attracting other atoms describes the outcome of bonding rather than the reason carbon bonds in the first place.