Question

why do carbon exist mostly in combined state?​

Answer 1

Answer:

Carbon atoms are extremely chemically reactive, and have a powerful desire to share electrons with any other atom willing to do so, including other carbon atoms. They are used industrially in many processes to steal oxygen atoms from other compounds, leaving only the pure other compound and CO2.09

Answer 2

Explanation:

Carbon is an element that can form many different compounds, as each carbon atom can form 4 chemical bonds with other atoms and because the carbon atom is just the right size to fit in comfortably as parts of very large molecules.