In order to dissociate bonds, some energy input is required. this can be achieved, for instance, by using photons of a given frequency (wavelength) as energy source. assume each photon strikes one molecule, and that dissociation of a bond depends only on that photon having enough energy for the dissociation: if you have 1 mol of hcl molecules, and you have a source of 255.0 nm photons that you can use to dissociate those bonds. what is the excess energy (in ev) that a photon carries over what is needed to dissociate an h-cl bond?

The image compares the arrangement of electrons in two different neutral atoms. a figure labeled atom q has a shaded sphere at the center of three concentric circles. the innermost circle has two black spheres. the middle circle has six black spheres. to the left of this figure is another figure labeled atom p. atom p has a shaded sphere at the center of three concentric circles. the innermost circle has two black spheres. the middle circle has seven black spheres. which of the following best explains the position of the two atoms in the periodic table? atom p has an estimated zeff of 7 and is therefore to the left of atom q, which has a zeff of 6. atom p has an estimated zeff of 7 and is therefore to the right of atom q, which has a zeff of 6. atom p has an estimated zeff of 5 and is therefore below atom q, which has a zeff of 4. atom p has an estimated zeff of 5 and is therefore above atom q, which has a zeff of 4.