Final answer:
The correct Lewis dot structure for a hydrogen molecule (H2) is H-H, indicating a single bond between two hydrogen atoms. Each hydrogen atom has one valence electron, and by sharing these, they form a stable covalent bond.
Step-by-step explanation:
The correct Lewis dot structure for a hydrogen molecule (H2) would be represented by the option A) H-H. This structure indicates that there is a single covalent bond between the two hydrogen atoms. Each hydrogen atom in the molecule has one valence electron, and by sharing these electrons, they form a covalent bond to achieve a stable electronic configuration similar to helium.
To draw the Lewis structure for a hydrogen molecule, you would place two hydrogen atom symbols (H) next to each other and draw a single dash to represent the covalent bond between them, which accounts for both electrons. This bond represents the two-electron shared pair that binds the atoms together.
In summary, Lewis Electron-Dot Structures help us visualize the bonding in molecules such as H2, wherein a hydrogen molecule, each atom is represented by an H surrounded by one dot, and the single bond connecting them is depicted by a line, indicative of the shared electrons.