Hafnium Hafnium-177 Hafnium-175 Hafnium-188 Hafnium-183 Hafnium-178 Hafnium-179 Hafnium-174 Hafnium-187 Hafnium-176 Hafnium-180 Hafnium-184 Hafnium(IV)carbide Hafnium(IV)oxide Hafnium-181 Hafnium-186 Hafnium-185 Hafnium-182 Isotopen van hafnium Hafnium-affaire