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The CsFr molecule is predicted to have francium at the negative end of the dipole, unlike all known heterodiatomic alkali metal molecules. Francium superoxide (FrO 2) is expected to have a more covalent character than its lighter congeners; this is attributed to the 6p electrons in francium being more involved in the francium–oxygen bonding. [4]
Francium-223 is the most stable isotope, with a half-life of 21.8 minutes, [8] and it is highly unlikely that an isotope of francium with a longer half-life will ever be discovered or synthesized. [22] Francium-223 is a fifth product of the uranium-235 decay series as a daughter isotope of actinium-227; thorium-227 is the more common daughter. [23]
Francium oxide – Fr 2 O; Gadolinium(III) oxide – Gd 2 O 3; Gallium(III) oxide – Ga 2 O 3; Germanium dioxide – GeO 2; Gold(III) oxide – Au 2 O 3; Hafnium dioxide – HfO 2; Holmium(III) oxide – Ho 2 O 3; Indium(I) oxide – In 2 O; Indium(III) oxide – In 2 O 3; Iodine pentoxide – I 2 O 5; Iridium(IV) oxide – IrO 2; Iron(II ...
Francium hydroxide is a hypothetical inorganic compound with a chemical formula Fr O H. It is a hydroxide of francium . It probably can be produced by reacting francium metal with water : [ 1 ]
An alarming study that had Americans tossing out their black plastic kitchen utensils, toys and to-go packages earlier this month overstated the concern, the researchers admit.
Most of its isotopes are very unstable, with half-lives of seconds or less. Of the first 101 elements in the periodic table, only francium is less stable, and all the astatine isotopes more stable than the longest-lived francium isotopes (205–211 At) are in any case synthetic and do not occur in nature. [6]
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Markeem Benson is accused of murdering Renise Wolfe in Nevada