Which of the following has the largest dispersion forces present at 25oC?Question 2Select one:a.F2b.Cl2c.Br2d.I2e.O2

Dispersion forces, also known as London dispersion forces, are a type of intermolecular force that exist between atoms and molecules. They are the weakest of the intermolecular forces but they increase with the size and shape of the molecule or atom.

Here are the steps to determine which of the given molecules has the largest dispersion forces:

1. Identify the type of molecules: All the given molecules (F2, Cl2, Br2, I2, O2) are diatomic molecules.

2. Understand the trend: Dispersion forces increase with the increase in the size of the atom or molecule. This is because larger atoms or molecules have more electrons, leading to larger temporary dipoles and therefore stronger dispersion forces.

3. Apply the trend to the given molecules: Among F2, Cl2, Br2, I2, and O2, I2 has the largest atomic size because iodine (I) is located furthest down the periodic table.

Therefore, I2 has the largest dispersion forces present at 25oC.