Decomposition of certain salts of uranium, for example UO2(NO3)·6H2O in air at 400 °C, yields orange or yellow UO3. This oxide is amphoteric and forms several hydroxides, the most stable being uranyl hydroxide UO2(OH)2. Reaction of uranium(VI) oxide with hydrogen results in uranium dioxide, which is similar in its properties with ThO2. This oxide is also basic and corresponds to the uranium hydroxide U(OH)4.
decomposition of certain salts of uranium for example uo2(no3)·6h2o in air at 400 °c yields orange or yellow uo3 this oxide is amphoteric and forms several hydroxides the most stable being uranyl hydroxide uo2(oh)2 reaction of uranium(vi) oxide with hydrogen results in uranium dioxide which is similar in its properties with tho2 this oxide is also basic and corresponds to the uranium hydroxide u(oh)4