  In part I of this paper the electric behaviour of pure water is described by
an interstitial-ice model, the so-called Protonic-Semiconductor
Interstitial-Ice or PSII model. Liquid water consists of an intact ice-like
lattice with a significant percentage of both vacant lattice positions and
water molecules filling the interstitial sites of the open ice-like lattice. It
is shown that not the Grotthuss mechanism is dominant in water but a
thermally-induced hopping mechanism of the H$^+$ and OH$^-$ ions linked to
vacancies. In part II this hopping mechanism is further explored and confronted
to the small Hall mobilities of the ions, still unexplained with mainstream
models. Two types of complexes are found. The first type is composed of either
charged vacancies with the opposite charge of the ion (H$^+$VL and OH$^-$VD) or
neutral vacancies (H$^+$V and OH$^-$V). These complexes are responsible for the
major part of the mobility of the ions. However, their movement is changing the
electric polarisation density of the lattice structure blocking the Hall effect
of these complexes. The second type of complexes contains a vacancy charged
similar as the ion (H$^+$VD and OH$^-$VL). This second type is responsible for
only a small fraction of the electric mobility (10-20%), but their movement is
not altering the electric polarisation of the lattice structure. They are
responsible for the measured small Hall mobilities of the ions.
