Question

which imfs are present for the substances below? select all that apply
note: compounds can have more than one intermolecular force. keep this in mind as you answer this question.
br₂
london dispersion
dipole - dipole
nf₃
london dispersion
dipole - dipole

Explanation:

• For \(Br_2\): It is a non - polar molecule. All molecules (polar or non - polar) have London dispersion forces. Since it is non - polar, it does not have dipole - dipole forces.
• For \(NF_3\): It is a polar molecule. All molecules have London dispersion forces. And because it is polar (due to its trigonal pyramidal shape and the difference in electronegativity between N and F), it has dipole - dipole forces.

Answer:

• \(Br_2\): London dispersion
• \(NF_3\): London dispersion, Dipole - dipole