152 cards
When the orbitals overlap ____, a pi ( π ) bond is formed.
When the orbitals overlap in such a way that there are two parallel electron cloud densities, ____ is formed.
____ bonds allow for free rotation about their axes because the electron density of the bonding orbital is a single linear accumulation bet…
σ bonds allow for free rotation about their axes because ____.
____ bonds do not allow for free rotation because the electron densities of the orbitals are parallel and cannot be twisted in such a way t…
π bonds do not allow for free rotation because ____.
____ bonds do not allow for free rotation.
____ bonds allow for free rotation.
The weakest of the intermolecular interactions are ____.
____ forces are the bonding forces that keep a substance together in its solid or liquid state and determine whether two substances are mis…
Intermolecular forces are the bonding forces that keep a substance together in its solid or liquid state and determine whether two substanc…
In a given moment, the electron density may be unequally distributed between the two atoms: resulting in a ____.
In a given moment, the ____ may be unequally distributed between the two atoms: resulting in a rapid polarization and counterpolarization o…
The attractive or repulsive interactions of ____ are known as London dispersion forces , a type of van der Waals force .
The attractive or repulsive interactions of these short-lived and rapidly shifting dipoles are known as ____.
Dispersion forces are the weakest of all of the intermolecular interactions because they are the result of ____.
____ forces are the weakest of all of the intermolecular interactions because they are the result of induced dipoles that change and shift…
The strength of the London force also depends on the degree and ease by which the molecules can be ____.
____ molecules and thus possess greater dispersion forces.
Dipole–dipole interactions are present in the ____ phase.
Polar species tend to have higher melting and boiling points than nonpolar species of comparable molecular weight due to ____.
Polar species tend to have ____ melting and boiling points than nonpolar species of comparable molecular weight due to dipole-dipole intera…
Realize that London forces and dipole–dipole interactions are different not in kind but in ____.
Polar molecules tend to orient themselves in such a way that the ____
A hydrogen bond is a specific, unusually strong form of ____ interaction that may be intra- or intermolecular.
A ____ is a specific, unusually strong form of dipole–dipole interaction that may be intra- or intermolecular.
Hydrogen bonds are not actually bonds. ____
When hydrogen is bonded to one of three highly electronegative atoms—____—the hydrogen atom carries only a small amount of the electron den…
When hydrogen is bonded to one of three highly electronegative atoms—nitrogen, oxygen, or fluorine—the hydrogen atom carries o____f the ele…
When hydrogen is bonded to one of three ____ atoms—nitrogen, oxygen, or fluorine—the hydrogen atom carries only a small amount of the elect…
Substances that display hydrogen bonding tend to have unusually high ____ compared to compounds of similar molecular weights that do not ex…
Many biochemical molecules, such as nucleotides, have different regions that are stabilized by ____.