Comptes Rendus Chimie

Armand Lattes

La classification des «  corps simples  » par la loi périodique interprétée en 1890 par Paul Sabatier

Editor-in-Chief

Comptes Rendus
Chimie
Editor-in-Chief
RETRACTION: Application of a novel adsorbent prepared using
magnetized Spirulina platensis algae modified by potassium nickel
hexacyanoferrate for removal of cesium, studied by response surface
methodology [C. R. Chimie, 2019, 22, no. 8, 562-573]
Volume 23, issue 4-5 (2020), p. 361
Published online: 4 September 2020
Issue date: 10 November 2020
https://doi.org/10.5802/crchim.44
This article is licensed under the
Creative Commons Attribution 4.0 International License.
http://creativecommons.org/licenses/by/4.0/
Les Comptes Rendus. Chimie sont membres du
Centre Mersenne pour l’édition scientifique ouverte
www.centre-mersenne.org
e-ISSN : 1878-1543
Comptes Rendus
Chimie
2020, 23, no 4-5, p. 361
https://doi.org/10.5802/crchim.44
Retraction / Rétractation
RETRACTION: Application of a novel adsorbent
prepared using magnetized Spirulina platensis algae
modified by potassium nickel hexacyanoferrate for
removal of cesium, studied by response surface
methodology
[C. R. Chimie, 2019, 22, no. 8, 562-573]
The above article in Comptes Rendus Chimie published online on 4 july 2019, in Elsevier Online Library
(https://www.sciencedirect.com/science/article/pii/S1631074819300992), and in Volume 22, Issue 8, 2019,
pages 562–573 (DOI: 10.1016/j.crci.2019.06.002), has been retracted at my request because it was found that
some graphical data cast doubts on the claims made.
Pierre Braunstein
Editor-in-Chief
braunstein@unistra.fr
ISSN (electronic) : 1878-1543 https://comptes-rendus.academie-sciences.fr/chimie/


RETRACTION: Application of a novel adsorbent prepared using magnetized <i>Spirulina platensis algae</i> modified by potassium nickel hexacyanoferrate for removal of cesium, studied by response surface methodology [C. R. Chimie, 2019, 22, no. 8, 562-573]

Faten Eshrati Yeganeh

Mohammad Yousefi

Malak Hekmati

Maryam Bikhof

Photocatalytic degradation of coomassie blue G-250 by magnetic NiFe$_{{2}}$O$_{{4}}$/ZnO nanocomposite

J. Brahmi

S. Nasri

H. Saidi

K. Aouadi

M. R. Sanderson

M. Winter

D. Cruickshank

S. Najmudin

H. Nasri

Optical and photoelectronic properties of a new material: Optoelectronic application

Minlan Gao

Gang Chen

Yun Bai

Rongjun Zhang

Jie Zhang

Shidong Zhu

Zhifang Zhang

Sanbao Dong

Modification of sodium dodecyl sulfate and evaluation of foaming activity

Mouzaina Boutaieb

Monia Guiza

Silvia Román

Beatriz Ledesma Cano

Sergio Nogales

Abdelmottaleb Ouederni

Hydrothermal carbonization as a preliminary step to pine cone pyrolysis for bioenergy production

Nourelhouda Boukaous

Lokmane Abdelouahed

Mustapha Chikhi

Chetna Mohabeer

Abdeslam Hassen Meniai

Bechara Taouk

Investigations on Mediterranean biomass pyrolysis ability by thermogravimetric analyses: thermal behaviour and sensitivity of kinetic parameters

Pierre Braunstein

Robert Guillaumont

Comptes Rendus
Chimie
Pierre Braunstein and Robert Guillaumont
Editorial to the Thematic Issue of Comptes Rendus Chimie dedicated to
the Periodic Table of the Elements
Volume 23, issue 3 (2020), p. 219-220.
<https://doi.org/10.5802/crchim.38>
Part of the Thematic Issue: Variations around the Periodic Table
Guest editors: Pierre Braunstein (Université de Strasbourg, Académie des
sciences) and Robert Guillaumont (Académie des sciences)
© Académie des sciences, Paris and the authors, 2020.
Some rights reserved.
This article is licensed under the
Creative Commons Attribution 4.0 International License.
http://creativecommons.org/licenses/by/4.0/
Les Comptes Rendus. Chimie sont membres du
Centre Mersenne pour l’édition scientifique ouverte
www.centre-mersenne.org
Comptes Rendus
Chimie
2020, 23, n 3, p. 219-220
https://doi.org/10.5802/crchim.38
Variations around the Periodic Table / Variations autour du tableau périodique
Editorial to the Thematic Issue of
Comptes Rendus Chimie dedicated to the
Periodic Table of the Elements
Pierre Braunstein and Robert Guillaumont
To celebrate the 150th Anniversary of the publi-
cation of The Principles of Chemistry by Mendeleev,
UNESCO has declared 2019 the International Year of
the Periodic Table. A multitude of events have been
organized around the world and the Académie des
sciences also contributed to this celebration through
a Symposium, “Variations around the Periodic Table”,
that was held in Paris on 19 November 2019.
The classification of the elements provided by the
Periodic Table certainly represents one of the most
impressive and fruitful achievements in modern sci-
ence. Using the international language of chemistry,
the Periodic Table is used worldwide and occupies
an iconic position in chemistry. Its current form is
reproduced in most undergraduate inorganic text-
books and displayed in almost every chemistry class-
room and lecture theatre.
Through the publication of his book The Principles
of Chemistry in 1869, Dmitri Ivanovitch Mendeleev
offered a classification of the 63 elements known that
allowed him not only to rationalize several proper-
ties and explain similarities between elements but
it also to predict the existence of elements that re-
mained to be discovered. Although Mendeleev has
been given the major credit for this achievement, it
actually resulted from the combined efforts by sev-
eral dedicated and imaginative individuals over a 80-
year timespan, with contributions from i.a. Lavoisier,
Dalton, Berzelius, Prout, Döbereiner, Dumas, Can-
nizzaro, von Pettenkofer, Gmelin, Odling, Béguyer de
Chancourtois, Newlands and Meyer.
The predictive power of Mendeleev’s classification
was beautifully demonstrated when François Lecoq
de Boisbaudran discovered gallium in 1875, the ex-
istence of which had been predicted by Mendeleev
6 years earlier as eka-aluminum (eka: that comes
next), when Lars Fredrik Nilson discovered scandium
in 1879 (eka-boron) and Clemens Winkler discovered
germanium in 1886 (eka-silikon). In 1875 Mendeleev
published in the Comptes Rendus de l’Académie des
sciences a version of his classification that prefigures
the Periodic Table as we know it today, with 118 ele-
ments organized in 7 periods and 18 columns.
If the Periodic Table is known to almost everybody,
the history of each element, the origin of its name,
the scientific bases that led to the stepwise establish-
ment of its current version, the false discoveries that
accompanied these adventures and the recent devel-
opments dealing with the actinide and transactinide
elements are less known to the non-experts. To shed
light on these diverse aspects was the main objective
of the session held in the Académie des sciences.
Pierre Avenas will show that the names of the el-
ements were often inspired by astronomy, mythol-
ogy, geography, or mineralogy. Some chemists and
physicists have been particularly creative. In general,
the names have Greek or Latin origins, sometimes
German or Arab. For the transuranic elements, the
ISSN (electronic) : 1878-1543 https://comptes-rendus.academie-sciences.fr/chimie/
220 Pierre Braunstein and Robert Guillaumont
names reflect the major personalities or laborato-
ries involved in nuclear physics and radiochemistry.
Marco Fontani will show that with each true discov-
ery of an element, there are, at least, a couple of false
starts. The stories behind the false discoveries can be
as interesting as the real ones and often reveal jeal-
ousy, greed, or vanity. False discoveries also provide
important ethical lessons. The major developments
that have led to the extension of the Periodic Table
beyond uranium around 1940 will be illustrated by
Robert Guillaumont. Efforts to find the missing el-
ements and the transuranic elements were in vain
because these are all artificial. A key step was the
synthesis of the first transuranic element, which dis-
played unexpected properties according to the rank-
ing of the elements in the Periodic Table. All the el-
ements beyond actinium have been included in the
actinide series (5f elements). Ended in 1961, their dis-
coveries were followed by that of the first 6d element:
the rutherfordium (Z = 104). Element 118, Oganes-
son was synthesized in 2006. Valeria Pershina will
discuss the spectacular developments in the rela-
tivistic quantum theory and calculational algorithms
that have occurred in the last couple of decades and
allowed for accurate calculations of the electronic
structure and properties of heavy and superheavy el-
ements, as well as of their compounds. These inves-
tigations have proven that relativistic effects deter-
mine periodicities in physical and chemical proper-
ties for elements beyond the 6th row of the Periodic
Table. However, the predictive power of the Periodic
Table at its upper end may be lost and challenges as-
sociated with the elements beyond the 7th row will
be discussed. Furthermore, Armand Lattes will show
how in 1890, Paul Sabatier, then a young professor of
Chemistry at the Faculty of Sciences of Toulouse used
the classification of “corps simples” in education and
approached this classification, graphically, from the
periodicity of the curve representing the maximum
valencies of the elements as a function of their atomic
weights.
We are most grateful to these authors for their con-
tributions and we wish you all an enjoyable reading.
Pierre Braunstein
Editor-in-Chief
Strasbourg
braunstein@unistra.fr
Robert Guillaumont
Palaiseau
robert.guillaumont0663@orange.fr
C. R. Chimie, 2020, 23, n 3, 219-220


Editorial to the Thematic Issue of <i>Comptes Rendus Chimie</i> dedicated to the Periodic Table of the Elements

Marco Fontani

Mary Virginia Orna

Mariagrazia Costa

Chemists and physicists behaving badly: The shadow side of two elemental discoveries

Tableau périodique des éléments chimiques et actinides

Not a member yet

La classification des « corps simples » par la loi périodique interprétée en 1890 par Paul Sabatier

RETRACTION: Application of a novel adsorbent prepared using magnetized <i>Spirulina platensis algae</i> modified by potassium nickel hexacyanoferrate for removal of cesium, studied by response surface methodology [C. R. Chimie, 2019, 22, no. 8, 562-573]

Photocatalytic degradation of coomassie blue G-250 by magnetic NiFe $_{{2}}$ O $_{{4}}$ /ZnO nanocomposite

Optical and photoelectronic properties of a new material: Optoelectronic application

Modification of sodium dodecyl sulfate and evaluation of foaming activity

Hydrothermal carbonization as a preliminary step to pine cone pyrolysis for bioenergy production

Investigations on Mediterranean biomass pyrolysis ability by thermogravimetric analyses: thermal behaviour and sensitivity of kinetic parameters

Editorial to the Thematic Issue of <i>Comptes Rendus Chimie</i> dedicated to the Periodic Table of the Elements

Chemists and physicists behaving badly: The shadow side of two elemental discoveries

Tableau périodique des éléments chimiques et actinides

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