Such elements include lawrencium, rutherfordium, seaborgium, bohrium, and roentgenium, but not mendelevium, nobelium, or copernicium.
22.
All elements up to and including nobelium, except technetium and promethium, are known to have at least one beta-stable isotope.
23.
Once the nobelium-255 is produced, it can be separated out in a similar way as used to purify the neighboring actinide mendelevium.
24.
Using a long capillary tube, and including potassium chloride aerosols in the helium gas, the nobelium atoms can be transported over tens of meters.
25.
For example, seaborgium 265, which has a nucleus containing 106 protons and 159 neutrons, decays to rutherfordium 261, which decays to nobelium 257.
26.
In the 1950s and 1960s, many claims of the discovery of nobelium were made from laboratories in Sweden, the Soviet Union, and the United States.
27.
The even-odd nobelium isotopes mostly continue to have longer half-lives as their mass numbers increase, with a dip in the trend at 257 No.
28.
However, both NoCl 2 and NoCl 3 were expected to exhibit nonvolatile behavior and hence this experiment was inconclusive as to what the preferred oxidation state of nobelium was.
29.
They were plutonium, americium ( used today in smoke detectors ), curium ( used in medicine ), berkelium, californium, einsteinium, fermium, mendelevium and nobelium.
30.
The chemical properties of nobelium and lawrencium were studied with 255 No ( t 1 / 2 = 3 min ) and 256 Lr ( t 1 / 2 = 35 s ).
