Fluorine, chlorine, bromine, and iodine are all halogens....

Name: Fluorine, chlorine, bromine, and iodine are all halogens. Fluorine and chlorine are gases while bromine is a liquid and iodine is a solid at room temperature. What type of intermolecular interaction is responsible for these different physical characteristics?
Uploaded: 2022-06-17T11:03:21-08:00
Duration: 4 min 15 s
Channel: Suman K
Description: Fluorine, chlorine, bromine, and iodine are all halogens. Fluorine and chlorine are gases while bromine is a liquid and iodine is a solid at room temperature. What type of intermolecular interaction is responsible for these different physical characteristics?

Fluorine, chlorine, bromine, and iodine are all halogens. Fluorine and chlorine are gases while bromine is a liquid and iodine is a solid at room temperature. What type of intermolecular interaction is responsible for these different physical characteristics?

Transcript

00:01 Hello, this question it is related to physical property of halogen.

00:11 So as we know that, that is halogens are, they are the 17th group on the of the periodic table.

00:21 See, all these molecules are the non -polar molecules.

00:26 First, they are the non -polar molecules.

00:27 So they are the non -polar molecules and non -polar molecules they...

00:34 Depends on their physical characteristics depends on london dispersion force.

00:48 So this is the type of the intermolecular interaction found in between the same non -polar molecule.

00:56 So here, hence all the halogens molecules that is f2, cl2, br2 and i2, these all are non -polars because there is no electronegativity difference between, these molecules or in these diatomic molecules so here or we can say between two atoms in each molecules now as the electronegativity of fluorine and chlorine are higher thus the electronegativity are slightly held or we can say the tightly held to the nuclear if we say that is fluorine it is more electronegative and chlorine it is also having the high electro -negativity value.

01:48 So therefore here, that is, it is having the high electronegativity value, that means we can say that is they are tightly held to the nuclei.

02:03 So the electrons have little chance to wander to one side of the molecule.

02:09 So the london dispersion force are relatively weak.

02:13 So as a substance is a solid, liquid or gas depends on the balance between the kinetic energy of the molecules and these intermolecular interaction.

02:23 Since in the case of f2 and cl2, london force it is weak...

Question

Fluorine, chlorine, bromine, and iodine are all halogens. Fluorine and chlorine are gases while bromine is a liquid and iodine is a solid at room temperature. What type of intermolecular interaction is responsible for these different physical characteristics?

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