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Polar molecules must contain one or more polar bonds due to a difference in electronegativity between the bonded atoms. Molecules containing polar bonds have no molecular polarity if the bond dipoles cancel each other out by symmetry. Polar molecules interact through dipole-dipole intermolecular forces and hydrogen bonds.
Download as PDF; Printable version; In other projects Wikidata item; Appearance. move to sidebar hide. This is a list of websites that contain lists of chemicals, or ...
PubChem can be accessed for free through a web user interface. Millions of compound structures and descriptive datasets can be freely downloaded via FTP. PubChem contains multiple substance descriptions and small molecules with fewer than 100 atoms and 1,000 bonds. More than 80 database vendors contribute to the growing PubChem database. [2]
Phase behavior Triple point? K (? °C), ? Pa Critical point [6]: 510 K (237 °C), 6100 kPa Std enthalpy change of fusion, Δ fus H o +6.160 kJ/mol Std entropy change
Molecular geometries can be specified in terms of 'bond lengths', 'bond angles' and 'torsional angles'. The bond length is defined to be the average distance between the nuclei of two atoms bonded together in any given molecule. A bond angle is the angle formed between three atoms across at least two bonds.
Polarizability usually refers to the tendency of matter, when subjected to an electric field, to acquire an electric dipole moment in proportion to that applied field. It is a property of particles with an electric charge.
Space-filling model of loratadine created using Avogadro.. Molecule builder-editor for Windows, Linux, Unix, and macOS.; All source code is licensed under the GNU General Public License (GPL) version 2.
The Nature of the Chemical Bond. 3rd ed., Cornell University Press, p. 93. 93. ^ The electronegativity of francium was chosen by Pauling as 0.7, close to that of caesium (also assessed 0.7 at that point).