The Basic Dry Chemistry of Neptunium

12 hours 28 atmospheres 50 micrograms AlBr3 aluminum metal anhydrous apparatus aqueous solution attempt to prepare barium bomb tube bromide CAPILLARY CONTAINING capillary was sealed carbon tetrachloride CCl4 vapor condensed cone crucible decomposes diameter DRY CHEMISTRY dry compounds electronegative evaporated to dryness fluoride gaseous green material heating higher chlorides HNO3 hydride hydrogen hydroxide ignition isomorphous lattice dimensions MDDC melting point metal weighing microcone micrograms of material neptunium compounds Neptunium dioxide Neptunium trifluoride NICKEL nitrate normal-valent Np(IV NpBr3 NpBr4 NpF3 NpF4 NpO2 NPOS obtained oxalate oxygen platinum plutonium precipitated Preparation and Properties preparation of neptunium pressure PuF3 PuF4 pumped PuO2 Pyrex quartz capillary reaction product reduced by H₂ residue soaked Solids from Solution stopcock sublimed NPC14 sulfide Table temperature thermally THERMOCOUPLE tribromide triiodide tube furnace U(IV uranium vacuo volatile W. H. Zachariasen wall thickness x-ray capillary x-ray diffraction pattern x-ray method yellow sublimate Zachariasen reported zone