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What is the name of the bond which is caused by changes in electron density?

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in Drug Biotechnology by (138k points)
What is the name of the bond which is caused by changes in electron density?

(a) Vander Waals force

(b) H bond

(c) Hydrophobic interaction

(d) Electrostatic bond

The question was asked during an internship interview.

Question is taken from Biopharmaceuticals topic in chapter Biopharmaceuticals of Drug Biotechnology

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The correct choice is (a) Vander Waals force

To explain: Van der Waals forces are also known as London forces. They are weak interactions caused by momentary changes in electron density in a molecule. They are the only attractive forces present in nonpolar compounds. The surface area of a molecule determines the strength of the van der Waals interactions between molecules.

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