Neptunium diarsenide is a binary inorganic compound of neptunium and arsenic with the chemical formula . The compound forms crystals.
Synthesis Heating stoichiometric amounts of neptunium hydride and arsenic:
Physical properties Neptunium diarsenide forms crystals of the tetragonal system, space group P4/nmm, cell parameters a = 0.3958 nm, c = 0.8098 nm.
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