Mepụta nsụgharị dị mgbagwoju anya nke ahịrịokwu a Ngwongwo alkali nke otu 1 na otu 2, alkaline earth metals, na-etolite arsenides na atọm arsenic dịpụrụ adịpụ.
N'ezie, ụdị okwu dị mgbagwoju anya nke ahịrịokwu ahụ bụ "Mkpụrụ alkali nke otu 1 na otu 2, alkaline earth metals, na-etolite arsenides na arsenic atom dịpụrụ adịpụ nke enwere ike ịtụle dị ka As 3 - anion, dịka ọmụmaatụ ikpo ọkụ arsenic ntụ ntụ na sodium gafere na-enye sodium arsenide (Na 3 As) ".