Waihangahia he putanga matatini ake o tenei rerenga Ko te ion nitride, N 3 −, he isoelectronic ki te anion waikura, O 2 −, me te anion fluoride, F −.
Ko te tikanga, ko te putanga matatini ake o te rerenga korero ko "Ko te ion nitride (N 3 - ) he isoelectronic me te anion waikura, O 2 -, me te anion fluoride, F - me te radius ionic e kiia ana ko 140 pm. "