Paramagnetic properties of some alkali borate glasses containing nickel oxide vere studied to throw some light on thc cquiHbrîunı betveen thc octahedral and the tetrahedral States of the divalent nickel ions. The experimental resuits obtained indicated that ali the glasses studied are paramegnetic and NiO2 / NiO< equilibrium depends on several factors such as the polarizability of the oxygen ligands surrounding the nickel ions, mobility of thc alkali ions, field strength and thc ability of some divalent, trivalent and tetravalent metal oxides as network forming units.