  As predicted by theory and confirmed by measurements, one, two or three
neutrons are emitted frequently in ultraperipheral collisions (UPCs) of heavy
relativistic nuclei, in particular, $^{208}$Pb. The exchange of low-energy
Weizs\"{a}cker--Williams photons dominates in such interactions. This leads to
the excitation and decay of Giant Dipole Resonances (GDR) in colliding nuclei
below the proton emission threshold. Less is known about the electromagnetic
dissociation of $^{208}$Pb induced by energetic photons leading to violent
fragmentation of $^{208}$Pb. The UPCs of lead nuclei at the LHC were modelled
with Relativistic ELectromagnetic Dissociation (RELDIS) model to evaluate the
contribution of photonuclear reactions in the domain of quasideuteron
absorption and at higher photon energies. It was demonstrated that due to the
presence of a single heavy residue in the final state mostly accompanied by
free protons and neutrons, the cross sections of the production of specific
elements can be well approximated by the proton emission cross sections, which
can be measured in the ALICE experiment at the LHC.
