Particle Interactions: Types and Characteristics Flashcards
¿What is hydrogen bonding?
A strong interaction that occurs between a hydrogen atom bonded to an electronegative atom and another electronegative atom.
Examples include interactions in water and in DNA, where they are crucial for structure.
¿What are London forces?
They are attractive interactions that occur due to instantaneous dipoles induced in molecules.
These forces are weaker and occur in all molecules, increasing with size and polarizability.
¿What is the relationship between the London forces and the size of the molecule?
London forces increase in strength as the size and polarizability of the molecule increases.
Larger molecules have more electrons, which facilitates the formation of instantaneous dipoles.
¿What is a dipole?
A dipole is a molecule that has a positively charged center and a negatively charged center, due to the unequal distribution of electrons.
Dipoles form in polar molecules and are responsible for interactions such as dipole-dipole forces and hydrogen bonding.
¿What characterizes dipole-dipole forces?
These are attractive forces between polar molecules that have permanent dipoles.
The greater the polarity of the molecules, the stronger these interactions will be.
