Question

how does carbon achieve a stable electron configuration and fulfill the octet rule? forming hydrogen bonds forming ionic bonds forming covalent bonds

Explanation:

Carbon has 4 valence electrons. To achieve a stable electron - configuration and fulfill the octet rule (having 8 valence electrons), it needs to gain, lose, or share 4 electrons. It is difficult for carbon to gain or lose 4 electrons due to energy requirements. So, it forms covalent bonds by sharing electrons with other atoms, allowing it to complete its octet. Hydrogen bonds are intermolecular forces and not a way for carbon to achieve an octet. Carbon is a non - metal and does not typically form ionic bonds to achieve an octet as it would require large energy changes for electron transfer.

Answer:

forming covalent bonds