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Many of the highly radioactive elements have values that must be predictions or extrapolations, but are unfortunately not marked as such. This is especially problematic for francium, which by relativistic calculations can be shown to be less electronegative than caesium, but for which the only value (0.7) in the literature predates these ...
These tables list values of molar ionization energies, measured in kJ⋅mol −1. This is the energy per mole necessary to remove electrons from gaseous atoms or atomic ions. The first molar ionization energy applies to the neutral atoms.
Transformation temperatures are subject to substantial hysteresis and values quoted here are approximate. Upon cooling below −15 °C, γ-cerium starts to change to β-cerium, but the transformation involves a volume increase and, as more β forms, the internal stresses build up and suppress further transformation. [ 18 ]
Cerium(IV) oxide ("ceria") has the fluorite structure, similarly to the dioxides of praseodymium and terbium.Ceria is a nonstoichiometric compound, meaning that the real formula is CeO 2−x, where x is about 0.2.
Some troops leave the battlefield injured. Others return from war with mental wounds. Yet many of the 2 million Iraq and Afghanistan veterans suffer from a condition the Defense Department refuses to acknowledge: Moral injury.
Significantly, all of these indicators exhibited changes from baseline values up to 7 weeks before any indication of inflammation or IBD symptoms. For the study, the authors recruited 309 adults ...
U.S. Secretary of State Marco Rubio on Wednesday defended a right-wing ideologue with a history of inflammatory comments on women and minorities whom the Trump administration has appointed to a ...
According to data compiled by Cirium, 83% of its flights reached their destination within 15 minutes of scheduled gate arrival times during 2024, above the continental benchmark of 76%.