The best Lewis structure that fits the molecular orbitals is also calculated, so you can directly compare with your predictions. This best Lewis structure is presented with formal electron pair localized bonds and the hybridization of the atomic orbitals used to form these localized bonds.
Jan 16, 2020 · "Square brackets can  be used in chemistry to represent the concentration of a chemical substance in solution and to denote charge a Lewis structure of an ion (particularly distributed charge in a complex ion), repeating chemical units (particularly in polymers) and transition state structures, among other uses."
3D structure of a carboxylic acid A carboxylic acid is an organic acid that contains a carboxyl group (C(=O)OH)  attached to an R-group. The general formula of a carboxylic acid is R–COOH , with R referring to the alkyl , alkenyl , aryl , or other group.
Acid-Base Calculator for arterial blood gases (ABG).
Two oxygen atoms can both achieve stable structures by sharing two pairs of electrons as in the diagram. The double bond is shown conventionally by two lines joining the atoms. Each line represents one pair of shared electrons. Carbon dioxide, CO2. Ethene, C2H4. Ethene has a double bond between the two carbon atoms.
The carbonyl group, a carbon-oxygen double bond, is the key structure in these classes of organic molecules: Aldehydes contain at least one hydrogen atom attached to the carbonyl carbon atom, ketones contain two carbon groups attached to the carbonyl carbon atom, carboxylic acids contain a hydroxyl group attached to the carbonyl carbon atom, and esters contain an oxygen atom attached to another carbon group connected to the carbonyl carbon atom.
To View the Lactic Acid Molecule in 3D using Jsmol. Lactic acid is an organic compound with the formula (CH3CH (OH)CO2H) C₃H₆O₃. In its solid state, it is white and water-soluble. In its liquid state, it is colorless. It is produced both naturally and synthetically.