Glycine at pH 2.34, where there is an equal mixture of

  the average or net positive charge is 0.5 or +1/2

TLS Online TPP Program

#Id: 8263

#Unit 1. Molecules and their Interaction Relevant to Biology

Spontaneous Dipole-Induced Dipole Interaction

Spontaneous dipole-induced dipole interactions are also known as dispersion or London forces

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#Id: 8264

#Unit 1. Molecules and their Interaction Relevant to Biology

Dispersion or London forces are large networks of intermolecular forces between nonpolar and non-charged molecules and atoms (i.e. alkanes, noble gases, and halogens). 

TLS Online TPP Program

#Id: 8265

#Unit 1. Molecules and their Interaction Relevant to Biology

Molecules that have induced dipoles may also induce neighbouring molecules to have dipole moments, so a large network of induced dipole-induced dipole interactions may exist.

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#Id: 8266

#Unit 1. Molecules and their Interaction Relevant to Biology

Potential energy of an induced dipole-induced dipole interaction depends on first ionization energy of atom creating permanent dipole.

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#Id: 8267

#Unit 1. Molecules and their Interaction Relevant to Biology

TLS Online TPP Program

#Id: 8268

#Unit 1. Molecules and their Interaction Relevant to Biology

Van der Waals interactions involve instantaneous dipoles and induced dipoles that arise because of fluctuations in the electron charge distributions of adjacent nonbonded atoms.