Group 4 element Group 4 element Group 4 is a group of elements in the periodic table. It contains the elements titanium (Ti), zirconium (Zr), hafnium (Hf) and rutherfordium (Rf). This group lies in the d-block of the periodic table. The group itself has not acquired a trivial name; it belongs to the broader grouping of the transition metals. The three Group 4 elements that occur naturally are titanium, zirconium and hafnium. The first three members of the group share similar properties; all three are hard refractory metals under standard conditions. However, the fourth element rutherfordium (Rf), has been synthesized in the laboratory;
The Periodic Table (short story collection) as an anti-Fascist partisan, his arrest and imprisonment, interrogation, and internment in the Fossoli di Carpi and Auschwitz camps, and postwar life as an industrial chemist. Every story, 21 in total, has the name of a chemical element and is connected to it in some way. The book was dramatised for radio by BBC Radio 4 in 2016. The dramatisation was broadcast in 12 episodes, with Henry Goodman and Akbar Kurtha as Primo Levi. The Periodic Table (short story collection) The Periodic Table () is a collection of short stories by Primo Levi, published in 1975, named after the periodic