A Tale of Seven Elements by Eric Scerri

By Eric Scerri

In 1913, English physicist Henry Moseley tested a sublime procedure for "counting" the weather in keeping with atomic quantity, ranging them from hydrogen (#1) to uranium (#92). It quickly grew to become transparent, even if, that seven components have been mysteriously lacking from the lineup--seven parts unknown to technology.

In his good researched and fascinating narrative, Eric Scerri provides the exciting tales of those seven elements--protactinium, hafnium, rhenium, technetium, francium, astatine and promethium. The e-book follows the old order of discovery, approximately spanning the 2 global wars, starting with the isolation of protactinium in 1917 and finishing with that of promethium in 1945. for every point, Scerri strains the examine that preceded the invention, the pivotal experiments, the personalities of the chemists concerned, the chemical nature of the recent point, and its functions in technological know-how and know-how. We study for example that alloys of hafnium--whose identify derives from the Latin identify for Copenhagen (hafnia)--have a number of the optimum boiling issues on list and are used for the nozzles in rocket thrusters similar to the Apollo Lunar Modules. Scerri additionally tells the non-public stories of researchers overcoming nice hindrances. We see how Lise Meitner and Otto Hahn--the pair who later proposed the speculation of atomic fission--were suffering to isolate point ninety one while global battle I intervened, Hahn was once drafted into the German army's poison gasoline unit, and Meitner was once compelled to press on by myself opposed to daunting odds. The ebook concludes by way of interpreting how and the place the twenty-five new components have taken their areas within the periodic desk within the final part century.

A story of 7 Elements paints a desirable photo of chemical research--the fallacious turns, ignored possibilities, bitterly disputed claims, serendipitous findings, accusations of dishonesty--all top ultimately to the fun of discovery.

Show description

Read or Download A Tale of Seven Elements PDF

Similar inorganic books

Paramagnetic Resonance of Metallobiomolecules

Paramagnetic transition steel ions give you the chance for software of a wide selection of spectroscopic concepts. even supposing spectroscopic recommendations aren't to boot often called traditional nuclear magnetic resonance (NMR), they supply specified info based at the energetic web site itself. This e-book describes the applying of paramagnetic resonance innovations to a few very important structures in metallobiochemistry.

Transition Metal Compounds

Describing all points of the physics of transition steel compounds, this ebook presents a entire assessment of this certain and various type of solids. starting with the elemental strategies of the physics of strongly correlated electron platforms, the constitution of transition steel ions, and the behaviours of transition steel ions in crystals, it is going directly to conceal extra complex subject matters comparable to metal-insulator transitions, orbital ordering, and novel phenomena comparable to multiferroics, structures with oxygen holes, and high-Tc superconductivity.

Catalysis by Ceria and Related Materials

This ebook follows the 2002 variation of Catalysis through Ceria and comparable fabrics, which was once the 1st ebook fullyyt dedicated to ceria and its catalytic homes. within the ten years because the first version a huge quantity of labor has been performed within the box, and ceria has won a admired place in catalysis as the most precious fabric for a number of purposes.

Additional resources for A Tale of Seven Elements

Sample text

Mendeleev also took care to distance himself from the notion of triads of elements. For example, he proposed that the element fluorine should be grouped together with chlorine, bromine, and iodine even though this would imply going beyond a triad to form a group of at least four elements (fig. 14). Whereas Lothar Meyer had concentrated on physical principles and mainly on the physical properties of the elements, Mendeleev concentrated on their chemical properties. But when it came to deciding upon the most important criterion for classifying the elements, Mendeleev insisted that atomic weight ordering would tolerate no exceptions.

He was also to champion the cause of the periodic law to a far greater extent than did Lothar Meyer. But if one asks the question of who arrived at the mature periodic system first, a strong case can be made that in many crucial details, the system of Lothar Meyer was not only first but also more correct. 27 He then edits a version of Cannizzaro’s article that appears in Germany in Ostwald’s series under the title of Klassiker der Wissenschaften. ”28 In 1864, Lothar Meyer publishes the first edition of a chemistry textbook, Die Modernen Theorie der Chemie, which was deeply influenced by the work of Cannizzaro.

Xxxii Introduction protons in the nucleus of the atoms of these elements can achieve greater stability if they occur in pairs in nuclear energy levels that are analogous to electronic energy levels into which electrons enter up to two at a time. A plot of the relative abundance of elements clearly shows a sawlike appearance due to this alternating stable (even Z) and less stable (odd Z) behavior (fig. 3). 32 Questions of Priority A very important aspect of the discovery stories of many elements has been the question of priority, which has frequently been bitterly disputed.

Download PDF sample

Rated 4.29 of 5 – based on 23 votes