Scientist has found the properties for Lawrencium

In the cover story of the newest copy of Nature exposes one of the basic atomic properties of an element that lives for only 27 seconds and can only be created through a particle accelerator. It is the outcome of a global collaboration and a scientist from Massey University.

Dr Anastasia Borschevsky, a subordinate member at the Centre for Theoretical Chemistry and Physics, and who is also employed at the Helmholtz Institut Mainz, located in Germany, is a fraction of the international team that contains scientist from Japan, Germany, Switzerland, and Israel.

The group examined element 103, Lawrencium, which is a heavyweight element with electrons more than 100. Lawrencium is unsteady and does not exist in nature, which means investigations about the element are numbered. Scientists made atoms that existed for around 27 seconds through a particle accelerator.

A new novel technique developed at the Japan Atomic Energy Agency tandem accelerator located in Tokai, Japan is used by scientists to calculate the ionization capacity – the amount of energy needed to eliminate outermost electron of an element. They also did a hypothetical calculation of the ionization capacity, organized by Massey University together with coworkers from Tel Aviv University in Israel.

They discovered that very small energy – only 4.96 electron volts – was needed ionize Lawrencium and this was nearly the same to the designed value. For the majority of the elements in the Periodic Table, the voltage is very low. Energies are usually very little. For example, the quantity of energy a mosquito consumes when it flies is around one trillion electron volts.

The research is methodically important due to the fact the this is the heaviest element for which the ionization energy has been calculated. It also helps verify the placement of lawrencium in the Periodic Table of Elements and gives more opportunities to knowing the chemical and physical properties of heavyweight elements.

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Comments

  1. says

    Good but the above article fails to comment on what it means for the placement of Lr in the periodic table.
    As I and others have suggested, the results support the placement of Lr in the d-block elements rather than the f-block where it is generally placed. Please see my book, “A Very Short Introduction to the Periodic Table”, Oxford University Press, 2011.

    Dr. Eric Scerri
    UCLA, Department of Chemistry
    http://www.ericscerri.com

  2. says

    There seems to be a good deal of confusion concerning this article and what it means for the on-going question of the constitution of group 3 of the periodic table. According to a an on-line news report from Nature Magazine, the measurement of the ionization energy of Lr is interpreted by some of the authors of the paper to confirm that Lr is the first member of the f-block, while the lead author seems to think it supports placing Lr in the d-block!

    http://www.nature.com/news/exotic-atom-struggles-to-find-its-place-in-the-periodic-table-1.17275

    In my recent book, “A Very Short Introduction to the Periodic Table”, published by OUP, I proposed a categorical argument in favor of group 3 being Sc, Y, Lu, Lr. This argument does not depend on measuring any particular property of any of these elements. If the periodic table is presented in the more correct 32-column or long-format, and if one maintains the order of increasing atomic numbers throughout the table, one is inevitably led to the conclusion that Lu and Lr belong to group 3 and that La and Ac should be placed at the start of the f-block elements. One can always return to a more familiar 18-column format but while retaining the group 3 arrangement of Sc, Y, Lu, Lr.

    http://www.amazon.com/The-Periodic-Table-Short-Introduction/dp/0199582491/ref=sr_1_1?ie=UTF8&qid=1354680359&sr=8-1&keywords=eric+scerri

    Eric Scerri, UCLA.
    http://www.ericscerri.com

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