In 1986, nobelium metal was estimated to have an enthalpy of sublimation between 126 kJ�mol " 1, a value close to the values for einsteinium, fermium, and mendelevium and supporting the theory that nobelium would form a divalent metal.
42.
Later work on nobelium also showed that the divalent state is more stable than the trivalent one and hence that the samples emitting the alpha particles could not have contained nobelium, as the divalent nobelium would not have eluted with the other trivalent actinides.
43.
Later work on nobelium also showed that the divalent state is more stable than the trivalent one and hence that the samples emitting the alpha particles could not have contained nobelium, as the divalent nobelium would not have eluted with the other trivalent actinides.
44.
Later work on nobelium also showed that the divalent state is more stable than the trivalent one and hence that the samples emitting the alpha particles could not have contained nobelium, as the divalent nobelium would not have eluted with the other trivalent actinides.
45.
That machine was used in the discovery of elements 102-106 ( 102, nobelium; 103, lawrencium; 104, rutherfordium; 105, dubnium and 106, seaborgium ), each produced and identified on the basis of only a few atoms.
46.
Seaborg was the principal or co-discoverer of ten elements : plutonium, americium, curium, berkelium, californium, einsteinium, fermium, mendelevium, nobelium and element 106, which, while he was still living, was named seaborgium in his honor.
47.
The half-lives of nobelium isotopes increase smoothly from 250 No to 253 No . However, a dip appears at 254 No, and beyond this the half-lives of even-even nobelium isotopes drop sharply as spontaneous fission becomes the dominant decay mode.
48.
The half-lives of nobelium isotopes increase smoothly from 250 No to 253 No . However, a dip appears at 254 No, and beyond this the half-lives of even-even nobelium isotopes drop sharply as spontaneous fission becomes the dominant decay mode.
49.
In December 1966, the Berkeley group repeated the Dubna experiments and fully confirmed them, and used this data to finally assign correctly the isotopes they had previously synthesized but could not yet identify at the time, and thus claimed to have discovered nobelium in 1958 to 1961.
50.
Recently it has been shown that the multi-nucleon transfer reactions in collisions of actinide nuclei ( such as uranium and curium ) might be used to synthesize the neutron-rich superheavy nuclei located at the island of stability, although formation of the lighter elements nobelium or seaborgium is more favored.
