Question

Carbon atoms are the most versatile molecular building blocks used by living organisms because ____

Answer 1

each carbon atom can form up to four covalent bonds with a wide variety of bond angles.

When carbon forms covalent bonds with four other atoms, they are arranged at the corners of an imaginary tetrahedron with bond angles near 109o.

When two carbon atoms are joined by a double bond, all bonds around the carbons are in the same plane.