Final answer:
Molecular hydrogen (H₂) and methane (CH₄) are examples of compounds with only nonpolar covalent bonds, involving equal sharing of electrons between nonmetal atoms.
Step-by-step explanation:
The compound that contains only nonpolar covalent bonds is one where electrons are equally shared between atoms. A prime example of such a compound is molecular hydrogen (H₂), in which two hydrogen atoms share electrons evenly. Another classic example is methane (CH₄), where the carbon atom shares electrons with four hydrogen atoms.
Since carbon and hydrogen have similar electronegativities, the electrons are equally distributed, resulting in nonpolar covalent bonds. These compounds are made of nonmetals only, which allows for the sharing of electron pairs between atoms to form a stable molecule. Methane, in particular, is a notable molecular compound in organic chemistry, critical for understanding the structure and reactivity of organic molecules.