Question

ICl has a higher boiling point than Br2. What is the best explanation for this?A. Br2 experiences dipole-dipole interactions.B. ICl experiences dipole-dipole interactions.C. Br2 forms hydrogen bonds.D. ICl experiences induced dipole-induced dipole interactions.

Answer 1

Answer:

The correct option is option B  (ICl experiences dipole- dipole interaction)

Explanation:

Boiling point of each molecule is dependent on type of inter molecular forces between them

There are 3 major kind of inter molecular forces present in molecules namely:

1. Van der waal forces. They are also referred to as induced dipole, temporary dipole (it is weakest of all inter molecular forces)
2. Dipole-dipole interaction. It is also known as Permanent dipole
3. Hydrogen bonding ( it is strongest of all the inter molecular forces)

Br2 can only experience induced dipole- induced dipole interaction. Each bromine atom in the molecule has the same electro negativity

ICl can only experience dipole - dipole interaction (Permanent dipole) because there is a little dipole moment between ICl. Cl (chlorine) is more electro negative than I (iodine).

Electro negativity is the ability for a gaseous atom to attract electrons to itself in a covalent bond. Chlorine will attract the shared electrons to it self than iodine.