Question

Flourine , Chlorine are gases bromine are liquid and iodine are solid? why

Answer 1

Answer:

fluorine to iodine, the electrons are further from the nuclei the electron clouds can more easily distort. The London dispersion forces become progressively stronger. It is only at temperatures between -7 °C and 59 °C that fluorine and chlorine are gases, bromine is a solid, and iodine is a solid.

Answer 2

Explanation:

To understand the reason for this phenomenon, we need to first cover up a few basics:

• The molecules of each substance attract each other through dispersion intermolecular forces.

• Whether a substance is a solid, liquid, or gas depends on the balance between the kinetic energies of the molecules and their intermolecular attractions.

Now, this is the reason:

• In fluorine, the electrons are tightly held to the nuclei. The electrons have little chance to wander to one side of the molecule, so the dispersion forces are relatively weak.

• As we move from fluorine to iodine, the electrons are considerably far away from the nuclei and so, the electron clouds can more easily distort. The dispersion forces become progressively stronger.