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A chemical bond is a force of attraction that holds atoms together to form molecules or compounds. Atoms form bonds with each other to achieve a more stable electron configuration, typically by filling their valence shell and achieving a noble gas electron configuration.
Some elements exist as molecules in nature because their atoms are more stable when bonded together to form molecules, sharing electrons to achieve a full valence shell. This stability leads to lower potential energy and greater overall stability for the molecule compared to individual free atoms.
