How are atoms in a molecule held together?

• A. By covalent bonds formed through the sharing of electron pairs
• B. By gravitational attraction between atomic nuclei
• C. By ionic bonds resulting from the transfer of protons
• D. By magnetic forces between electrons

Answer: (A)

Verified step by step guidance

1. Understand that atoms in a molecule are held together by forces that involve their electrons and nuclei.
2. Recall that covalent bonds form when atoms share pairs of electrons to achieve stable electron configurations.
3. Recognize that ionic bonds involve the transfer of electrons (not protons) between atoms, leading to attraction between charged ions, but this is typical in ionic compounds, not molecules.
4. Note that gravitational attraction between atomic nuclei is negligible compared to electromagnetic forces at the atomic scale.
5. Conclude that the primary way atoms in a molecule are held together is by covalent bonds formed through the sharing of electron pairs.