Induced Dipole?

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Induced Dipole?

Postby pauline_le_3I » Thu Nov 15, 2018 12:58 pm

Can someone explain what an induced dipole is? And how that differs from a regular dipole-dipole interaction?

Camille Marangi 2E
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Re: Induced Dipole?

Postby Camille Marangi 2E » Thu Nov 15, 2018 1:18 pm

An induced dipole moment occurs when there is movement in the electrons of a bond otherwise known as polarization that creates fleeting unbalanced distributions of electrons and thus small dipole moments, whereas in a regular dipole moment the sharing of electrons at all times is unbalanced due to one of the two bonded atoms having a significantly stronger electronegativity.

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Re: Induced Dipole?

Postby Chem_Mod » Thu Nov 15, 2018 1:23 pm

Dipole dipole interactions are between dipoles on two polar molecules. Conversely, dipole-induced-dipole interactions can occur between a polar and a nonpolar molecule. The polar molecule induces a dipole by approaching the nonpolar molecule and shifting the electrons. Take for example, the interaction between HCl (has a dipole moment) and Ar (nonpolar, no dipole moment). As the Cl gets closer to Ar, the electrons in Ar shift away from Cl because Cl has higher electron density. This shifting in electrons is an induced dipole.

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