<span>London forces also known as "induced-dipole-induced-dipole interactions" and are in principle found in every molecule. The interaction occurs from the transient dipoles all molecules have as a result of fluctuations in the instantaneous positions of electrons. </span><span>Dipole-dipole arises when we are able to set up a polarity in the molecule. So for an example if a highly electro-negative atom is bond to a less electro-negative atom then there will be a polarity in the molecule and we therefore have the dipole-dipole interaction. </span><span>For the determination of geometry for the specific examples , use the VSEPR (Valence Shell Electron Pair Repulsion) model and by that determine the geometry.</span>
Answer is: the energy of exactly one photon of this light is 4.75·10⁻¹⁹ J. Photon energy equation: E = h·ν. E - energy of one photon. ν- frequency. h - Planck's constant. ν = 7.17·10¹⁴ Hz. h = 6.63·10⁻³⁴ J·s. E = 6.63·10⁻³⁴ J·s · 7.17·10¹⁴ Hz. E = 4.75·10⁻¹⁹ J.
