WATER MOLECULE, H₂O above the ocean

At right: water image # 3: picture showing a water molecule on an aquatic background.

This image is 500 x 500 pixels; the original image is 4096 x 4096 pixels. Water: consists of one oxygen atom covalently joined to two hydrogen atoms. H₂O is a highly polarised molecule which leads to hydrogen bonding among the molecules. In the image above, the central oxygen atom (red) is pictured as a sphere drawn at the scale of its covalent radius just touching two hydrogen atoms (green) drawn at the scale of their covalent radii. The transparent spheres represent the "surfaces" of each molecule and are created from the van der Waals radii of the constituent atoms.