Abuur nooc ka sii adag weedhan Ion nitride, N 3 -, waa isoelectronic oo leh oxide anion, O 2 -, iyo fluoride anion, F -.
Dabcan, nooca ugu adag ee jumlada waa "Nitride ion (N 3 −) waa isoelectronic oo leh oxide anion, O 2 −, iyo fluoride anion, F − oo leh radius ionic oo lagu qiyaasay 140 pm. "