Rutherfordium, the 104th element on the periodic table ... As expected for a heavier molecule, hafnium chloride was found to be less volatile than zirconium chloride (that is, a lower enthalpy ...

Show more In the final programme in our Elements series, Justin Rowlatt looks at the rarest and oddest members of the periodic table. Selenium, bismuth, molybdenum, antimony, rhenium, hafnium ...