Bigger molecules will have stronger London dispersion forces. So I2 has the strongest forces, and F2 will have the weakest. Correspondingly, I2 will have the highest boiling point and F2 will have the lowest boiling point.
Which substance has the strongest London dispersion forces?
The dispersion forces are strongest for iodine molecules because they have the greatest number of electrons.
What is the strongest intermolecular force in Cl2?
What type of intermolecular forces exist between cl2 and CCl4?
| Question | Answer |
|---|---|
| What is the strongest type of intermolecular force present in Cl2? | Dispersion |
| What is the strongest intermolecular force present in CHBr3? | dipole-dipole |
| What type of intermolecular force causes the dissolution of KF in water? | ion-dipole force |
Why is Cl2 stronger than Br2?
Br2 molecules are larger than Cl2 molecules, so more electrons are present in Br2 molecules. Therefore there are stronger van der waals forces between Br2 molecules than Cl2 molecules, so more energy is needed to melt Br2. Answered by Charlotte B.
Which molecule has the highest boiling point Br2 Cl2 I2 or F2?
The boiling points in F2, Cl2, Br2 and I2are determined by the size of the dispersion forces between molecules. The bigger the atoms, the more polarisable their electron clouds and the greater the dispersion forces. Hence boiling points are in order: I2 > Br2 > Cl2 > F2.
Is Van der Waals bond the weakest?
Van der Waals forces are the weakest intermolecular force and consist of dipole-dipole forces and dispersion forces.
Are London dispersion forces strong?
London dispersion forces tend to be: stronger between molecules that are easily polarized. weaker between molecules that are not easily polarized.
What is the strongest intermolecular force in CH4?
Therefore the strongest intermolecular forces between CH4 molecules are Van der Waals forces. Hydrogen bond are stronger than Van der Waals forces therefore both NH3 and H2O will have higher boiling points than CH4.
What is the strongest intermolecular force in SCO?
Hydrogen Bonding (H-Bonding)
Hydrogen bonds are caused by highly electronegative atoms. They only occur between hydrogen and oxygen, fluorine or nitrogen, and are the strongest intermolecular force.
Is F2 a London dispersion force?
London Dispersion Forces
When this occurs, non-polar molecules form weak attractions with other non-polar molecules. These London dispersion forces are often found in the halogens (e.g., F2 and I2), the noble gases (e.g., Ne and Ar), and in other non-polar molecules, such as carbon dioxide and methane.
Why is Br2 stronger than BRCL?
In short “The more electrons a molecule has, the stronger the London dispersion forcesare. For example, bromine, Br2, has more electrons than chlorine, Cl2, sobromine will have stronger London dispersion forces than chlorine, resulting in a higher boiling point for bromine, 59 oC, compared to chlorine, –35 oC.”
Why is the F2 bond so weak?
The comparative weakness of the F2 bond is traced to the electrostatic energy, which is considerably smaller than would be expected on extrapolation of the trend in the I2 ! Cl2 data. … The weakness of the F2 bond is therefore a combination of quantum mechanical (Pauli) and classical (electrostatic) factors.
Why bromine has higher boiling point than chlorine?
Chlorine, as chlorine has fewer electrons shells than bromine. … Therefore, bromine is larger and has stronger intermolecular forces, meaning it requires more heat energy to break the strong bonds (high boiling point). So in conclusion chlorine has a lower boiling point.
Which has higher boiling point I2 or Br2?
I2 has a higher boiling point than Br2. The atomic weights of Br and I are 80 and 127 respectively. Since I2 has higher molecular weight, it has stronger London dispersion forces so it has a higher boiling point than Br2.
Which has higher boiling point F2 or Cl2?
Larger size means there are more electrons available to form the dipoles. Cl is lower on the Table. It has 3 energy levels while F has only 2 energy levels. So Cl2 is larger than F2.
Which compound has the strongest intermolecular forces?
The strongest intermolecular force is hydrogen bonding, which is a particular subset of dipole-dipole interactions that occur when a hydrogen is in close proximity (bound to) a highly electronegative element (namely oxygen, nitrogen, or fluorine).